Income Taxes - Components of Net Deferred Tax Assets (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
U.S. foreign tax credit carryforwards	$ 4,812	$ 4,791
Net operating loss carryforwards	466	283
Stock-based compensation	16	15
Provision for credit losses	14	14
Deferred gain on mall sale transactions	12	13
Accrued expenses	10	23
Pre-opening expenses	7	9
Other	0	1
Total deferred tax assets, gross	5,337	5,149
Less — valuation allowances	(4,922)	(4,786)
Total deferred tax assets	415	363
Deferred tax liabilities:
Property and equipment	(274)	(251)
Prepaid expenses	(4)	(5)
Other	(7)	(8)
Total deferred tax liabilities	(285)	(264)
Deferred tax assets, net	$ 130	$ 99