Acquisitions (Narrative) (Details) $ in Millions	1 Months Ended	9 Months Ended
	Nov. 01, 2024 USD ($) site item	Sep. 30, 2024 USD ($) item	Dec. 31, 2023 USD ($)
Business Acquisition [Line Items]
Performance targets, maximum potential obligation		$ 13.5	$ 17.9
Other Acquisitions [Member]
Business Acquisition [Line Items]
Number of towers acquired | item		179
Property and equipment		$ 27.9
Intangible assets		211.1
Operating leases right-of-use assets, net		25.3
Other net liabilities assumed		6.8
Acquisition related holdbacks		4.6
Long-term lease liabilities assumed		$ 18.1
Subsequent Event [Member] | Other Acquisitions [Member]
Business Acquisition [Line Items]
Number of communication sites acquired | item	45
Cash paid for acquisition	$ 16.3
Subsequent Event [Member] | Millicom [Member]
Business Acquisition [Line Items]
Number of communication sites acquired | site	7,000
Purchase agreement amount	$ 975.0
Master lease agreement, lease back term	15 years
Master lease agreement, existing site leases | site	1,500
Master lease agreement, existing site leases, extended lease term	15 years
Exclusivity right agreement term	7 years
Exclusivity right agreement, number of build-to-suit sites agreement authorizes to be built | site	2,500
Exclusivity right agreement, new leases on sites built, lease term	15 years