Summary of Significant Accounting Policies (Narrative) (Details)	2 Months Ended	12 Months Ended
	Feb. 28, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) site	Dec. 31, 2021 USD ($)
Summary of Significant Accounting Policies [Line Items]
Gain (loss) on sale of investments		$ 0	$ 0
Interest cost capitalized		$ 900,000	600,000	$ 500,000
Intangible assets, useful life		15 years
Impairment charge recognized, related to long-lived assets		$ 169,400,000	43,200,000	33,000,000.0
Impairment Long Lived Asset Held For Use Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag		impairment charges
Asset retirement obligation		$ 119,300,000	79,800,000
Accounts receivable, net		182,746,000	184,368,000
Unamortized deferred lease costs		3,200,000	3,300,000	2,900,000
Amortization expense		2,300,000	1,900,000	1,400,000
Deferred lease costs		8,700,000	7,700,000
Gain (loss) on remeasurement of U.S. dollar denominated intercompany loan		52,400,000	(12,900,000)	(44,300,000)
Intercompany loans funded		4,200,000
Repayment of debt		223,400,000
Intercompany foreign currency outstanding balance		$ 1,300,000	1,500,000
Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Acquired intangible assets, useful life		1 year
Operating lease term		5 years
Minimum [Member] | Towers and Related Assets [Member]
Summary of Significant Accounting Policies [Line Items]
Estimated useful lives		3 years
Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Business acquisitions period after closing date to determine additional adjustments		1 year
Acquired intangible assets, useful life		3 years
Operating lease term		15 years
Maximum [Member] | Towers and Related Assets [Member]
Summary of Significant Accounting Policies [Line Items]
Estimated useful lives		15 years
Site Development Revenue [Member]
Summary of Significant Accounting Policies [Line Items]
Accounts receivable, net		$ 32,300,000	$ 59,600,000
Segment Concentration Risk [Member] | Domestic Site Leasing [Member] | Revenue [Member]
Summary of Significant Accounting Policies [Line Items]
Concentration risk percentage		93.00%
Segment Concentration Risk [Member] | Site Development Revenue [Member] | Revenue [Member]
Summary of Significant Accounting Policies [Line Items]
Concentration risk percentage		7.00%
Exclusive Right to Lease and Operate Utility Transmission Structures [Member]
Summary of Significant Accounting Policies [Line Items]
Consideration transferred				$ 950,500,000
Airtel Tanzania [Member]
Summary of Significant Accounting Policies [Line Items]
Number of utility transmission structures acquired | site			1,445
Consideration transferred			$ 176,100,000
Subsequent Event [Member]
Summary of Significant Accounting Policies [Line Items]
Repayment of debt	$ 15,000,000.0