Discontinued Operations - Summary of Selected Financial Information of LQH Parent Included in Condensed Consolidated Statements of Cash Flows (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Non-cash items included in net income (loss):
Depreciation and amortization	$ 46	$ 40
Equity-based compensation expense	$ 2	3
LQH Parent [Member] | Discontinued Operations [Member]
Non-cash items included in net income (loss):
Depreciation and amortization		2
Amortization of deferred costs		1
Equity-based compensation expense		2
Investing activities:
Capital expenditures		$ 3