Goodwill and Other Intangible Assets - Schedule of Carrying Amount of Other Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Intangible Assets [Line Items]
Finite-lived intangible assets, Gross carrying amount	$ 682	$ 604
Finite-lived intangible assets, Accumulated amortization	110	67
Indefinite-lived intangible assets, Gross carrying amount	75	74
Total other intangible assets, Gross carrying amount	757	678
Total other intangible assets, Accumulated amortization	110	67
Customer Relationships [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, Gross carrying amount	611	532
Finite-lived intangible assets, Accumulated amortization	76	47
Other [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, Gross carrying amount	71	72
Finite-lived intangible assets, Accumulated amortization	$ 34	$ 20