Segment Data (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of business segments | segment	2
Number of reportable segments | segment	2
Site leasing	$ 2,104,087	$ 1,954,472	$ 1,860,858
Total assets	9,801,699	9,158,018
Brazil [Member]
Segment Reporting Information [Line Items]
Site leasing	233,500	222,600	$ 226,700
Total assets	$ 900	$ 1,000