Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]
U.S. Federal statutory rate	21.00%	21.00%	35.00%
Income tax (expense) benefit	$ 19	$ 63	$ 71
Changes in valuation allowance for tax loss carryforwards and credits	(36)	0	1
Valuation allowance	762	554
Goodwill impairment	22	0	0
Gains on transfers of subsidiaries	21	0	0
Discrete charge		11
Foreign earnings subject to U.S. federal income tax	(12)	(13)	74
State tax loss carryforwards	2	2
Foreign tax loss carryforwards	14	68
Transition tax under Tax Cuts and Jobs Act (TCJA)	0	11	43
Unremitted earnings of foreign subsidiaries	2,200
Estimated income tax liability related to unremitted earnings of foreign subsidiaries	117
Estimated decrease in unrecognized tax benefits related to the expiration of foreign statute of limitations and the conclusion of foreign income tax examinations that may occur within the coming year	32
Domestic Tax Authority
Schedule of Equity Method Investments [Line Items]
Foreign earnings subject to U.S. federal income tax			$ 74
Spain
Schedule of Equity Method Investments [Line Items]
Changes in valuation allowance for tax loss carryforwards and credits	$ 33
Australia
Schedule of Equity Method Investments [Line Items]
Valuation allowance		$ 10