Income Taxes (Components of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Property and equipment		$ 10	$ 8
Deferred site rental receivable		9	9
Site rental contracts and tenant relationships, net		29	29
Total deferred income tax liabilities		48	46
Intangible assets		29	30
Net operating loss carryforwards	[1]	5	12
Straight-line rent expense liability		5	4
Accrued liabilities		5	6
Other		5	4
Valuation allowances		(2)	(2)
Total deferred income tax assets, net		47	54
Net deferred income tax assets (liabilities)		$ (1)	$ 8

[1] Balance results from the Company's foreign NOLs. Due to the Company's REIT status, no federal or state NOLs result in the Company recording a deferred income tax asset. See further discussion surrounding the Company's NOL balances below.