UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax				$ 10	$ (1)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax				11	(1)
Foreign currency translation adjustments, net of tax (2)	[1]	$ (35)	$ (23)	(63)	(91)
Other Comprehensive Income (Loss), Available-for-sale Securities, before Reclassification Adjustments, Tax		(7)		30	(1)
Currency translation adjustment on deemed repatriation tax liability
Tax (benefit) associated with gain (loss) on components of foreign currency translation		(8)	(5)	(23)	(16)
Net Investment Hedging
Foreign currency translation adjustments, net of tax (2)		85	17	112	111
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax		111	$ 23	146	$ 148
Trip.com Group convertible debt securities | Short-term Investments | Trip.com Group 1% Notes due 2019
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax		$ 21		$ 21

[1] Foreign currency translation adjustments result from currency fluctuations on the translation of the Company's non-U.S. Dollar functional currency subsidiaries' net assets, net of the impact of net investment hedges.
Foreign currency translation adjustments, net of tax, includes foreign currency transaction gains of $85 million ($111 million before tax) and $112 million ($146 million before tax) for the three and nine months ended September 30, 2019, respectively, and foreign currency transaction gains of $17 million ($23 million before tax) and $111 million ($148 million before tax) for the three and nine months ended September 30, 2018, respectively, associated with the Company's Euro-denominated debt that is designated as a hedge against the impact of currency fluctuations on the net assets of a Euro functional currency subsidiary (see Note 9).
The Company recorded tax benefits of $8 million and $23 million for the three and nine months ended September 30, 2019, respectively, and tax benefits of $5 million and $16 million for the three and nine months ended September 30, 2018, respectively, related to foreign currency translation adjustments to its one-time deemed repatriation tax liability recorded at December 31, 2017 and foreign earnings for periods after December 31, 2017 that are subject to U.S. federal and state income tax, resulting from the enactment of the U.S. Tax Cuts and Jobs Act (the "Tax Act").