Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (81)	$ 290	$ (495)	$ 710
Other comprehensive income (loss), net of tax benefit (expense)
Currency translation adjustment	25	(35)	21	(23)
Pension liability adjustment	(2)	(1)	(5)	(5)
Cash flow hedge adjustment	1	(8)	(39)	(48)
Total other comprehensive income (loss)	28	(42)	(13)	(66)
Comprehensive income (loss)	(53)	248	(508)	644
Comprehensive loss (income) attributable to noncontrolling interests	2	(2)	4	(4)
Comprehensive income (loss) attributable to Hilton stockholders	(51)	246	(504)	640
Currency translation adjustment, tax benefit (expense)	(11)	7	(2)	8
Pension liability adjustment, tax expense	(1)	0	(2)	(1)
Cash flow hedge adjustment, tax benefit (expense)	$ (1)	$ 3	$ 13	$ 16