CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Operating activities:
Net income	$ 494	$ 373
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property and equipment, including internal-use software and website development	530	507
Amortization of stock-based compensation	175	154
Amortization of intangible assets	154	215
Impairment of goodwill	0	61
Deferred income taxes	(58)	(281)
Foreign exchange loss on cash, restricted cash and short-term investments, net	40	94
Realized gain on foreign currency forwards	(4)	(34)
Loss on minority equity investments, net	13	100
Other	(16)	27
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable	(543)	(416)
Prepaid expenses and other assets	0	(12)
Accounts payable, merchant	119	42
Accounts payable, other, accrued expenses and other liabilities	207	171
Tax payable/receivable, net	(6)	141
Deferred merchant bookings	1,305	957
Deferred revenue	16	21
Net cash provided by operating activities	2,426	2,120
Investing activities:
Capital expenditures, including internal-use software and website development	(864)	(634)
Purchases of investments	(1,283)	(1,714)
Sales and maturities of investments	635	1,692
Acquisitions, net of cash and restricted cash acquired	80	(40)
Other, net	3	41
Net cash used in investing activities	(1,429)	(655)
Financing activities:
Proceeds from issuance of long-term debt, net of issuance costs	1,235	0
Payment of long-term debt	0	(500)
Payment of Liberty Expedia Exchangeable Debentures	(400)	0
Purchases of treasury stock	(352)	(620)
Proceeds from issuance of treasury stock	0	31
Payment of dividends to stockholders	(145)	(138)
Proceeds from exercise of equity awards and employee stock purchase plan	277	138
Other, net	(8)	(65)
Net cash provided by (used in) financing activities	607	(1,154)
Effect of exchange rate changes on cash, cash equivalents and restricted cash and cash equivalents	(62)	(119)
Net increase in cash, cash equivalents and restricted cash and cash equivalents	1,542	192
Cash, cash equivalents and restricted cash and cash equivalents at beginning of period	2,705	2,917
Cash, cash equivalents and restricted cash and cash equivalents at end of period	4,247	3,109
Supplemental cash flow information
Cash paid for interest	156	196
Income tax payments, net	$ 216	$ 188