Segment Data (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) segment	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of business segments | segment	2
Site leasing	$ 559,432	$ 505,103
Total assets	$ 10,142,100		$ 9,801,699
Site Leasing Revenue [Member]
Segment Reporting Information [Line Items]
Number of reportable segments | segment	2
Brazil [Member]
Segment Reporting Information [Line Items]
Site leasing	$ 65,200	$ 55,400
Total assets	$ 1,000,000		$ 900,000