Income Taxes - Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred income tax assets
Employee pensions and other liabilities	$ 63	$ 49
Other balance sheet reserves and allowances	18	18
Operating lease liabilities	14	0
Tax loss and credit carryforwards	80	63
Deferred revenue	12	20
Total deferred income tax assets	187	150
Valuation allowance	(45)	(39)
Net deferred income tax assets	142	111
Deferred income tax liabilities
Intangibles and capitalized software	8	17
Right of use assets - operating lease	13	0
Property and equipment	12	11
Other	28	19
Total deferred income tax liabilities	61	47
Total net deferred income tax assets	$ 81	$ 64