Income Taxes - Schedule of Tax Effects of Temporary Differences and Tax Carryforwards (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Pension	$ 37	$ 27
Other asset basis differences	70	70
Operating lease liabilities	34	33
Accruals and reserves	61	61
Net operating and capital losses	47	32
Other		6
Gross deferred tax assets	249	229
Valuation allowance	(60)	(32)
Total deferred tax assets	189	197
Deferred tax liabilities:
Other intangible assets	(44)	(42)
Property, plant and equipment	(25)	(22)
Operating lease assets	(32)	(32)
Other	(13)	(12)
Total deferred tax liabilities	(114)	(108)
Net deferred tax asset	$ 75	$ 89