| Metric | Oct 29, 2024 FY24 Q3 | Feb 25, 2025 FY24 Q4 | Apr 29, 2025 FY25 Q1 | Jul 29, 2025 FY25 Q2 | Oct 28, 2025 FY25 Q3 | Feb 24, 2026 FY25 Q4 | Apr 28, 2026 FY26 Q1 | Jul 28, 2026 FY26 Q2 |
|---|---|---|---|---|---|---|---|---|
| For FY2026 | ||||||||
| Africa & APAC property revenue | — | — | — | — | — | New“$1,535 million to $1,555 million” | Raised“$1,595 million to $1,615 million” | Raised“$1,620 million to $1,640 million” |
| Africa & APAC property revenue midpoint growth rate | — | — | — | — | — | — | New“12.8%” | Raised“14.6%” |
| Data Centers segment property revenue | — | — | — | — | — | New“$1,175 million to $1,195 million” | Reiterated“$1,175 million to $1,195 million” | Raised“$1,200 million to $1,220 million” |
| Data Centers segment property revenue midpoint growth rate | — | — | — | — | — | — | New“12.5%” | Raised“14.9%” |
| Europe property revenue | — | — | — | — | — | New“$1,025 million to $1,055 million” | Reiterated“$1,025 million to $1,055 million” | Reiterated“$1,025 million to $1,055 million” |
| Europe property revenue midpoint growth rate | — | — | — | — | — | — | New“10.9%” | Reiterated“10.9%” |
| International pass-through revenue (Africa & APAC Property) | — | — | — | — | — | New“$382” | Raised“$403” | Raised“$478” |
| International pass-through revenue (Europe Property) | — | — | — | — | — | New“$213” | Lowered“$212” | Raised“$230” |
| International pass-through revenue (Latin America Property) | — | — | — | — | — | New“$485” | Raised“$497” | Raised“$516” |
| International pass-through revenue (Total Property) | — | — | — | — | — | New“$1,080” | Raised“$1,112” | Raised“$1,224” |
| Latin America property revenue | — | — | — | — | — | New“$1,645 million to $1,665 million” | Raised“$1,730 million to $1,750 million” | Raised“$1,790 million to $1,810 million” |
| Latin America property revenue midpoint growth rate | — | — | — | — | — | — | New“5.9%” | Raised“9.6%” |
| Straight-line revenue (Africa & APAC Property) | — | — | — | — | — | New“67” | Raised“70” | Lowered“33” |
| Straight-line revenue (Data Centers Property) | — | — | — | — | — | New“18” | Reiterated“18” | Raised“19” |
| Straight-line revenue (Europe Property) | — | — | — | — | — | New“3” | Reiterated“3” | — |
| Straight-line revenue (Latin America Property) | — | — | — | — | — | New“(34)” | Raised“6” | Lowered“3” |
| Straight-line revenue (Total Property) | — | — | — | — | — | New“(70)” | Raised“(27)” | Lowered“(66)” |
| Straight-line revenue (U.S. & Canada Property) | — | — | — | — | — | New“(124)” | Reiterated“(124)” | Reiterated“(124)” |
| Total property revenue | — | — | — | — | — | New“$10,440 to $10,590” | Raised“$10,585 to $10,735” | Raised“$10,695 to $10,845” |
| Total property revenue growth rate vs. prior year | — | — | — | — | — | — | New“3.4%” | Raised“4.5 %” |
| U.S. & Canada segment property revenue | — | — | — | — | — | New“$5,060 million to $5,120 million” | Reiterated“$5,060 million to $5,120 million” | Reiterated“$5,060 million to $5,120 million” |
| U.S. & Canada segment property revenue midpoint growth rate | — | — | — | — | — | — | New“(3.0)%” | Reiterated“(3.0)%” |
| Adjusted EBITDA | — | — | — | — | — | New“7,090 to 7,160” | Raised“7,195 to 7,265” | Raised“7,240 to 7,310” |
| Adjusted EBITDA growth rate vs. prior year | — | — | — | — | — | — | New“1.4%” | Raised“2.0 %” |
| Net income | — | — | — | — | — | New“2,945 to 3,025” | Raised“3,015 to 3,095” | Raised“3,270 to 3,350” |
| Net income attributable to AMT common stockholders | — | — | — | — | — | New“2,980 to 3,060” | Lowered“2,965 to 3,045” | Raised“3,200 to 3,280” |
| Net income attributable to AMT common stockholders growth rate vs. prior year | — | — | — | — | — | — | New“18.8%” | Raised“28.1 %” |
| Net income growth rate vs. prior year | — | — | — | — | — | — | New“16.2%” | Raised“25.9 %” |
| AFFO attributable to AMT common stockholders | — | — | — | — | — | New“5,035 to 5,115” | Raised“5,090 to 5,170” | Raised“5,135 to 5,215” |
| AFFO attributable to AMT common stockholders growth rate vs. prior year | — | — | — | — | — | — | New“1.8%” | Raised“2.7 %” |
| AFFO attributable to AMT common stockholders per Share | — | — | — | — | — | New“$10.78 to $10.95” | Raised“$10.90 to $11.07” | Raised“$11.00 to $11.17” |
| AFFO attributable to AMT common stockholders per Share growth rate vs. prior year | — | — | — | — | — | — | New“2.1%” | Raised“3.0 %” |
| Capital improvement | — | — | — | — | — | New“160 to 170” | Raised“165 to 175” | Raised“170 to 180” |
| Construction of communications sites (discretionary capital projects) | — | — | — | — | — | New“1,700 to 2,300 communications sites globally” | — | — |
| Construction of communications sites (included in discretionary capital projects) | — | — | — | — | — | — | — | New“1,700 to 2,300 communications sites globally” |
| Construction of communications sites (within Discretionary capital projects) | — | — | — | — | — | — | New“1,700 to 2,300” | — |
| Corporate | — | — | — | — | — | New“15 – 15” | Reiterated“15 – 15” | Reiterated“15 – 15” |
| Data Centers segment development spend | — | — | — | — | — | New“$695 million” | — | — |
| Data Centers segment development spend (included in discretionary capital projects) | — | — | — | — | — | — | — | New“$695 million” |
| Data Centers segment development spend (within Discretionary capital projects) | — | — | — | — | — | — | New“$695 million” | — |
| Discretionary capital projects | — | — | — | — | — | New“$1,050 to $1,080” | Reiterated“$1,050 to $1,080” | Reiterated“$1,050 to $1,080” |
| Distributions per share | — | — | — | — | — | — | New“$1.79” | — |
| Divided by weighted average diluted shares outstanding (in thousands) | — | — | — | — | — | New“467,000 – 467,000” | — | — |
| Ground lease purchases | — | — | — | — | — | New“200 to 220” | Reiterated“200 to 220” | Reiterated“200 to 220” |
| New Site Tenant Billings (Africa & APAC Property) | — | — | — | — | — | New“~3.5%” | Reiterated“~3.5%” | — |
| New Site Tenant Billings (Europe Property) | — | — | — | — | — | New“~9%” | Reiterated“~9%” | — |
| New Site Tenant Billings (Latin America Property) | — | — | — | — | — | New“~0%” | Reiterated“~0%” | — |
| New Site Tenant Billings (Total Property) | — | — | — | — | — | New“~1%” | Reiterated“~1%” | — |
| New Site Tenant Billings Growth - Africa & APAC Property | — | — | — | — | — | — | — | New“~3.5%” |
| New Site Tenant Billings Growth - Europe Property | — | — | — | — | — | — | — | New“~6%” |
| New Site Tenant Billings Growth - Latin America Property | — | — | — | — | — | — | — | New“~0%” |
| New Site Tenant Billings Growth - Total Property | — | — | — | — | — | — | — | New“~1%” |
| Organic Tenant Billings (Africa & APAC Property) | — | — | — | — | — | New“~8.5%” | Reiterated“~8.5%” | — |
| Organic Tenant Billings (Europe Property) | — | — | — | — | — | New“~4%” | Reiterated“~4%” | — |
| Organic Tenant Billings Growth - Africa & APAC Property | — | — | — | — | — | — | — | New“~8.5%” |
| Organic Tenant Billings Growth - Europe Property | — | — | — | — | — | — | — | New“~4%” |
| Organic Tenant Billings Growth - Latin America Property | — | — | — | — | — | — | — | New“(~3%)” |
| Organic Tenant Billings Growth - U.S. & Canada Property | — | — | — | — | — | — | — | New“~0.5%” |
| Redevelopment | — | — | — | — | — | New“335 to 365” | Reiterated“335 to 365” | Reiterated“335 to 365” |
| Start-up capital projects | — | — | — | — | — | New“35 to 55” | Reiterated“35 to 55” | Reiterated“35 to 55” |
| Total capital expenditures | — | — | — | — | — | New“$ 1,795 to $ 1,905” | Raised“$1,800 to $1,910” | — |
| Total capital expenditures outlook | — | — | — | — | — | — | — | New“$ 1,805 to $ 1,915” |
| Total Tenant Billings Growth (Africa & APAC Property) | — | — | — | — | — | New“~12%” | Reiterated“~12%” | Reiterated“~12%” |
| Total Tenant Billings Growth (Europe Property) | — | — | — | — | — | New“~13%” | Reiterated“~13%” | Lowered“~10%” |
| Total Tenant Billings Growth (Latin America Property) | — | — | — | — | — | New“(~3%)” | Reiterated“(~3%)” | — |
| Total Tenant Billings Growth (Total Property) | — | — | — | — | — | New“~2%” | Reiterated“~2%” | Reiterated“~2%” |
| Total Tenant Billings Growth (U.S. & Canada Property) | — | — | — | — | — | New“~0.5%” | Reiterated“~0.5%” | — |
| For FY2025 | ||||||||
| Data Centers segment property revenue | — | New“$1,025 million to $1,045 million” | Reiterated“$1,025 million to $1,045 million” | Raised“$1,035 million to $1,055 million” | — | — | — | — |
| Data Centers segment property revenue (component of full year property revenue outlook) | — | — | — | — | New“$1,040 million to $1,050 million” | — | — | — |
| Data Centers segment property revenue midpoint growth rate | — | — | — | — | New“13.0%” | — | — | — |
| Increase to full year 2025 outlook midpoint - property revenue | — | — | — | — | New“$40 million” | — | — | — |
| International pass-through revenue (International Property) | — | New“$1,020” | Raised“$1,034” | Raised“$1,061” | Raised“$1,080” | — | — | — |
| International property revenue | — | New“$3,705 million to $3,775 million” | Raised“$3,755 million to $3,825 million” | Raised“$3,900 million to $3,970 million” | — | — | — | — |
| International property revenue (component of full year property revenue outlook) | — | — | — | — | New“$3,940 million to $4,000 million” | — | — | — |
| International property revenue midpoint growth rate | — | — | — | — | New“5.6%” | — | — | — |
| Straight-line revenue - International Property | — | New“24” | Lowered“23” | — | — | — | — | — |
| Straight-line revenue (Data Centers Property) | — | — | — | New“7” | Reiterated“7” | — | — | — |
| Straight-line revenue (Total Property) | — | New“62” | Lowered“61” | Raised“87” | Reiterated“87” | — | — | — |
| Straight-line revenue (U.S. & Canada Property) | — | New“28” | Reiterated“28” | Raised“48” | Reiterated“48” | — | — | — |
| Total property revenue | — | New“$9,920 to $10,070” | Raised“$9,970 to $10,120” | Raised“$10,135 to $10,285” | Raised“$10,210 to $10,290” | — | — | — |
| Total property revenue midpoint growth rate vs. prior year | — | — | — | — | New“3.2%” | — | — | — |
| U.S. & Canada segment property revenue | — | New“$5,190 million to $5,250 million” | Reiterated“$5,190 million to $5,250 million” | Raised“$5,200 million to $5,260 million” | — | — | — | — |
| U.S. & Canada segment property revenue (component of full year property revenue outlook) | — | — | — | — | New“$5,230 million to $5,240 million” | — | — | — |
| U.S. & Canada segment property revenue midpoint growth rate | — | — | — | — | New“(0.2)%” | — | — | — |
| Adjusted EBITDA | — | New“6,855 to 6,925” | Raised“6,885 to 6,955” | Raised“7,005 to 7,075” | Raised“7,058 to 7,113” | — | — | — |
| Adjusted EBITDA midpoint growth rate vs. prior year | — | — | — | — | New“4.0%” | — | — | — |
| Increase to full year 2025 outlook midpoint - Adjusted EBITDA | — | — | — | — | New“$45 million” | — | — | — |
| Increase to full year 2025 outlook midpoint - net income | — | — | — | — | New“$95 million” | — | — | — |
| Increase to full year 2025 outlook midpoint - net income attributable to AMT common stockholders | — | — | — | — | New“$40 million” | — | — | — |
| Net income | — | New“2,930 to 3,020” | Lowered“2,740 to 2,840” | Lowered“2,340 to 2,440” | Raised“2,458 to 2,513” | — | — | — |
| Net income attributable to AMT common stockholders | — | New“2,960 to 3,050” | Lowered“2,775 to 2,875” | Lowered“2,300 to 2,400” | Raised“2,363 to 2,418” | — | — | — |
| Net income attributable to AMT common stockholders midpoint growth rate vs. prior year | — | — | — | — | New“6.0%” | — | — | — |
| Net income midpoint growth rate vs. prior year | — | — | — | — | New“9.0%” | — | — | — |
| AFFO attributable to AMT common stockholders | — | New“4,830 to 4,920” | Raised“4,850 to 4,940” | Raised“4,905 to 4,995” | Raised“4,973 to 5,028” | — | — | — |
| AFFO attributable to AMT common stockholders midpoint growth rate vs. prior year | — | — | — | — | New“1.3%” | — | — | — |
| AFFO attributable to AMT common stockholders midpoint growth rate vs. prior year, as adjusted | — | — | — | — | New“7.3%” | — | — | — |
| AFFO attributable to AMT common stockholders per Share | — | New“$10.31 to $10.50” | Raised“$10.35 to $10.54” | Raised“$10.46 to $10.65” | Raised“$10.60 to $10.72” | — | — | — |
| AFFO attributable to AMT common stockholders per Share midpoint growth rate vs. prior year | — | — | — | — | New“1.1%” | — | — | — |
| AFFO attributable to AMT common stockholders per Share midpoint growth rate vs. prior year, as adjusted | — | — | — | — | New“7.0%” | — | — | — |
| Capital improvement | — | New“145 to 155” | Reiterated“145 to 155” | Raised“155 to 165” | Raised“160 to 170” | — | — | — |
| Construction of communications sites (Discretionary capital projects) | — | New“1,950 to 2,550” | — | Lowered“1,850 to 2,450 communications sites globally” | — | — | — | — |
| Construction of communications sites (within discretionary capital projects) | — | — | New“1,950 to 2,550” | — | Lowered“1,850 to 2,450 communications sites globally” | — | — | — |
| Corporate | — | New“10 — 10” | Reiterated“10” | — | Reiterated“10 – 10” | — | — | — |
| Corporate (capital expenditures) | — | — | New“10 — 10” | Reiterated“10 — 10” | — | — | — | — |
| Data Centers segment development spend | — | New“$610 million” | — | — | — | — | — | — |
| Data Centers segment development spend (within Discretionary capital projects) | — | — | New“$610 million” | Lowered“$600 million” | Reiterated“$600 million” | — | — | — |
| Discretionary capital projects | — | New“$880 to $910” | Reiterated“$880 to $910” | Lowered“$865 to $895” | Reiterated“$865 to $895” | — | — | — |
| Ground lease purchases | — | New“190 to 210” | Reiterated“190 to 210” | Raised“200 to 220” | Reiterated“200 to 220” | — | — | — |
| Increase to full year 2025 outlook midpoint - AFFO attributable to AMT common stockholders | — | — | — | — | New“$50 million” | — | — | — |
| Increase to full year 2025 outlook midpoint - AFFO attributable to AMT common stockholders per Share | — | — | — | — | New“$0.10” | — | — | — |
| New Site Tenant Billings - International Property | — | New“~1%” | Reiterated“~1%” | Reiterated“~1%” | — | — | — | — |
| New Site Tenant Billings - Total Property | — | New“~0.5%” | Reiterated“~0.5%” | Reiterated“~0.5%” | — | — | — | — |
| New Site Tenant Billings - U.S. & Canada Property | — | New“~0%” | Reiterated“~0%” | Reiterated“~0%” | — | — | — | — |
| New Site Tenant Billings growth (International Property) | — | — | — | — | New“~1%” | — | — | — |
| New Site Tenant Billings growth (Total Property) | — | — | — | — | New“~0.5%” | — | — | — |
| New Site Tenant Billings growth (U.S. & Canada Property) | — | — | — | — | New“~0%” | — | — | — |
| Organic Tenant Billings - International Property | — | New“~6%” | Reiterated“~6%” | Reiterated“>6%” | — | — | — | — |
| Organic Tenant Billings - Total Property | — | New“~5%” | Reiterated“~5%” | Reiterated“~5%” | — | — | — | — |
| Organic Tenant Billings growth (International Property) | — | — | — | — | New“>6%” | — | — | — |
| Organic Tenant Billings growth (Total Property) | — | — | — | — | New“~5%” | — | — | — |
| Organic Tenant Billings growth (U.S. & Canada Property) | — | — | — | — | New“~4.3%” | — | — | — |
| Redevelopment | — | New“360 to 390” | Reiterated“360 to 390” | Lowered“320 to 350” | Reiterated“320 to 350” | — | — | — |
| Start-up capital projects | — | New“50 to 70” | Reiterated“50 to 70” | Raised“65 to 85” | Reiterated“65 to 85” | — | — | — |
| Total (Capital Expenditures) | — | New“$1,635 to $1,745” | Reiterated“$1,635 to $1,745” | — | Lowered“$1,620 to $1,730” | — | — | — |
| Total capital expenditures outlook | — | — | — | New“$1,615 to $1,725” | — | — | — | — |
| Total Tenant Billings Growth - U.S. & Canada Property | — | New“≥4.3%” | Reiterated“≥4.3%” | Reiterated“~4.3%” | — | — | — | — |
| Total Tenant Billings Growth (International Property) | — | New“~7%” | Reiterated“~7%” | Reiterated“>7%” | Reiterated“>7%” | — | — | — |
| Total Tenant Billings Growth (Total Property) | — | New“~5.5%” | Reiterated“~5.5%” | Reiterated“~5.5%” | Reiterated“~5.5%” | — | — | — |
| For FY2024 | ||||||||
| Data Centers segment property revenue (component of full year 2024 total property revenue outlook) | New“$920 million to $930 million” | — | — | — | — | — | — | — |
| International pass-through revenue - International Property | New“$1,027” | — | — | — | — | — | — | — |
| International property revenue (component of full year 2024 total property revenue outlook) | New“$3,725 million to $3,795 million” | — | — | — | — | — | — | — |
| Straight-line revenue - International Property | New“33” | — | — | — | — | — | — | — |
| Straight-line revenue - Total Property | New“275” | — | — | — | — | — | — | — |
| Straight-line revenue - U.S. & Canada Property | New“232” | — | — | — | — | — | — | — |
| Total property revenue | New“$9,890 to $9,980” | — | — | — | — | — | — | — |
| U.S. & Canada segment property revenue (component of full year 2024 total property revenue outlook) | New“$5,245 million to $5,255 million” | — | — | — | — | — | — | — |
| Adjusted EBITDA | New“6,770 to 6,850” | — | — | — | — | — | — | — |
| Net income | New“1,992 to 2,072” | — | — | — | — | — | — | — |
| Net income attributable to AMT common stockholders | New“1,952 to 2,032” | — | — | — | — | — | — | — |
| AFFO attributable to AMT common stockholders | New“4,890 to 4,970” | — | — | — | — | — | — | — |
| AFFO attributable to AMT common stockholders per Share | New“$10.45 to $10.62” | — | — | — | — | — | — | — |
| AFFO attributable to AMT common stockholders per Share, as adjusted | New“$9.86 to $10.03” | — | — | — | — | — | — | — |
| AFFO attributable to AMT common stockholders, as adjusted | New“4,616 to 4,696” | — | — | — | — | — | — | — |
| Capital improvement | New“155 to 165” | — | — | — | — | — | — | — |
| Corporate | New“10” | — | — | — | — | — | — | — |
| Corporate (capital expenditures) | New“10 — 10” | — | — | — | — | — | — | — |
| Discretionary capital projects | New“$780 to $810” | — | — | — | — | — | — | — |
| Discretionary capital projects - construction of communications sites | New“construction of 1,800 to 2,600 communications sites globally” | — | — | — | — | — | — | — |
| Discretionary capital projects - Data Centers segment development spend | New“$480 million of development spend in the Company’s Data Centers segment” | — | — | — | — | — | — | — |
| Ground lease purchases | New“125 to 145” | — | — | — | — | — | — | — |
| New Site Tenant Billings - International Property | New“>2%” | — | — | — | — | — | — | — |
| New Site Tenant Billings - Total Property | New“~1%” | — | — | — | — | — | — | — |
| New Site Tenant Billings - U.S. & Canada Property | New“~0%” | — | — | — | — | — | — | — |
| Organic Tenant Billings - International Property | New“~6%” | — | — | — | — | — | — | — |
| Organic Tenant Billings - Total Property | New“~5%” | — | — | — | — | — | — | — |
| Redevelopment | New“365 to 395” | — | — | — | — | — | — | — |
| Start-up capital projects | New“65 to 85” | — | — | — | — | — | — | — |
| Total (Capital Expenditures) | New“$1,500 to $1,610” | — | — | — | — | — | — | — |
| Total Tenant Billings Growth - International Property | New“>8%” | — | — | — | — | — | — | — |
| Total Tenant Billings Growth - Total Property | New“~6%” | — | — | — | — | — | — | — |
| Total Tenant Billings Growth - U.S. & Canada Property | New“~4.7%” | — | — | — | — | — | — | — |
| For FY2017 | ||||||||
| Remaining amount under the Company's 2017 buyback program | — | — | — | — | New“approximately $2.0 billion” | — | — | — |
| No period stated | ||||||||
| Remaining amount under its buyback program | — | — | — | — | — | New“approximately $1.6 billion” | — | — |
| Remaining share repurchase authorization | — | — | — | — | — | New“approximately $1.6 billion” | — | — |