Goodwill and Other Intangible Assets - Other Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Total amortizable intangible assets, Gross carrying amount	$ 281	$ 287
Total amortizable intangible assets, Accumulated amortization	(236)	(235)
Total amortizable intangible assets, Net carrying amount	45	52
Software [Member]
Finite-Lived Intangible Assets [Line Items]
Total amortizable intangible assets, Gross carrying amount	236	240
Total amortizable intangible assets, Accumulated amortization	(218)	(216)
Total amortizable intangible assets, Net carrying amount	18	24
Patent and Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Total amortizable intangible assets, Gross carrying amount	25	25
Total amortizable intangible assets, Accumulated amortization	(8)	(8)
Total amortizable intangible assets, Net carrying amount	17	17
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Total amortizable intangible assets, Gross carrying amount	20	22
Total amortizable intangible assets, Accumulated amortization	(10)	(11)
Total amortizable intangible assets, Net carrying amount	$ 10	$ 11