Acquisitions (Narrative) (Details) $ in Millions	1 Months Ended	3 Months Ended
	Apr. 29, 2022 USD ($) item	Mar. 31, 2022 USD ($) item	Dec. 31, 2021 USD ($)
Business Acquisition [Line Items]
Performance targets, maximum potential obligation		$ 11.4	$ 11.6
Other Acquisitions [Member]
Business Acquisition [Line Items]
Number of towers acquired | item		1,807
Property and equipment		$ 74.9
Intangible assets		83.2
Operating leases right-of-use assets, net		36.3
Acquired and other right-of-use assets, net		58.3
Other net liabilities assumed		$ 44.9
Airtel Tanzania [Member]
Business Acquisition [Line Items]
Number of communication sites acquired | item		1,445
Airtel Tanzania [Member] | Legal Title Fully Transferred [Member]
Business Acquisition [Line Items]
Number of communication sites acquired | item		963
Airtel Tanzania [Member] | Initially Recorded in Acquired and Other Right-of-use Assets, Net [Member]
Business Acquisition [Line Items]
Number of communication sites acquired | item		482
Subsequent Event [Member] | Airtel Tanzania [Member]
Business Acquisition [Line Items]
Cash paid for acquisition	$ 177.1
Number of communication sites acquired | item	358