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Concentration of Credit Risk (Summary of Significant Customers and Percentage of Total Revenue for Specified Time Periods Derived from Such Customers) (Details) - Revenue [Member] | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
T-Mobile [Member] | Customer Concentration Risk [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage | 32.50% | 36.40% | 36.20%
AT&T Wireless [Member] | Customer Concentration Risk [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage | 19.50% | 19.60% | 22.20%
Verizon Wireless [Member] | Customer Concentration Risk [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage | 14.60% | 14.50% | 14.70%
Domestic Site Leasing [Member] | Segment Concentration Risk [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage | 93.00% |  |
Domestic Site Leasing [Member] | T-Mobile [Member] | Segment Concentration Risk [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage | 40.20% | 40.60% | 40.20%
Domestic Site Leasing [Member] | AT&T Wireless [Member] | Segment Concentration Risk [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage | 28.60% | 29.00% | 30.50%
Domestic Site Leasing [Member] | Verizon Wireless [Member] | Segment Concentration Risk [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage | 19.70% | 20.10% | 19.80%
International Site Leasing [Member] | Telefonica [Member] | Segment Concentration Risk [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage | 22.50% | 20.70% | 16.30%
International Site Leasing [Member] | Claro [Member] | Segment Concentration Risk [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage | 20.20% | 19.00% | 13.70%
International Site Leasing [Member] | TIM [Member] | Segment Concentration Risk [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage | 15.70% | 17.30% | 7.20%
International Site Leasing [Member] | Oi S.A. [Member] | Segment Concentration Risk [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage | 3.50% | 3.90% | 28.30%
Site Development Revenue [Member] | Segment Concentration Risk [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage | 7.00% |  |
Site Development Revenue [Member] | T-Mobile [Member] | Customer Concentration Risk [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage | 71.50% | 80.10% | 78.20%
Site Development Revenue [Member] | Verizon Wireless [Member] | Customer Concentration Risk [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage | 16.80% | 7.80% | 3.30%

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-42 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-21 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-20 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482861/275-10-50-18 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482861/275-10-50-20 + Details
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