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
	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%