Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]
Net earnings (loss)	$ (357)	$ (14)
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	529	5
Stock-based compensation	77	(1)
Cash payments for stock-based compensation		(2)
Share of (earnings) losses of Expedia		24
Cash receipts from returns on investment in Expedia		6
Realized (gain) loss on foreign currency forwards	7
Deferred income tax expense (benefit)	(93)	(12)
Other noncash charges (credits), net	(17)	4
Changes in operating assets and liabilities
Current and other assets	(279)	2
Payables and other liabilities	1,810	4
Net cash provided (used) by operating activities	1,677	16
Cash flows from investing activities:
Capital expended for property and equipment	(170)	(4)
Purchases of short-term marketable securities	(780)
Sales of short-term marketable securities	7
Net settlement of foreign currency forwards	(7)
Other, net	(2)
Net cash provided (used) by investing activities	(952)	(4)
Cash flows from financing activities:
Borrowings of debt	92	108
Repayments of debt	(97)	(116)
Shares issued by subsidiary	58
Shares repurchased by subsidiary	(45)
Dividends paid by subsidiary	(36)
Proceeds from exercise of equity awards and employee stock purchase plan	4
Taxes paid in lieu of shares issued for stock-based compensation	(5)
Contributions from (distributions to) parent, net		(6)
Other financing activities, net	(14)
Net cash provided (used) by financing activities	(43)	(14)
Effect of foreign exchange rates on cash and cash equivalents	31
Net increase (decrease) in cash and cash equivalents	713	(2)
Cash and cash equivalents at beginning of period	1,851	$ 2
Cash and cash equivalents at end of period	$ 2,564