Other Liabilities (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Liabilities [Line Items]
Other Liabilities, non-current		$ 1,950	$ 2,168
Costs Incurred, Asset Retirement Obligation Incurred		4	9
Asset Retirement Obligation, Accretion Expense		20	20
Asset Retirement Obligation, Revision of Estimate	[1]	37	(16)
Asset Retirement Obligation, Liabilities Settled		(3)	(3)
Estimated Future Undiscounted Cash Flows Expected To Be Paid Relating To Asset Retirement Obligations		1,100
Amortization of Below Market Tenant Lease		49	54	$ 58
Below Market Lease, Amortization Income, Year Four		25
Below Market Lease, Amortization Income, after Year Five		20
Accrued Payroll and Other Compensation		210	192
Below Market Lease, Amortization Income, Year One		45
Below-market tenant leases - amortization income - year 2		41
Below Market Lease, Amortization Income, Year Three		33
Deferred rental revenues [Domain]
Other Liabilities [Line Items]
Other Liabilities, non-current		1,337	1,568
Deferred credits, net [Member]
Other Liabilities [Line Items]
Other Liabilities, non-current		261	311
Asset retirement obligation [Member]
Other Liabilities [Line Items]
Other Liabilities, non-current		327	269	$ 259
Deferred tax liability, noncurrent [Member]
Other Liabilities [Line Items]
Other Liabilities, non-current		18	14
Other long-term liabilities[Member]
Other Liabilities [Line Items]
Other Liabilities, non-current		$ 7	$ 6

[1] Primarily relates to (1) increases in estimated undiscounted cash flows and (2) adjustments to estimated settlement dates for the years ending December 31, 2022 and 2021, respectively, for certain asset retirement obligations and is offset against the associated asset retirement costs recorded within "Property and equipment, net" on the Company's consolidated balance sheet.