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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Cash flows from operating activities      
Net income $ 18,485 $ 22,112 $ 15,934
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 5,741 4,315 3,025
Share-based compensation 4,836 4,152 3,723
Deferred income taxes (37) 286 (377)
Other 39 (64) 24
Changes in assets and liabilities:      
Accounts receivable (1,961) (1,892) (1,609)
Prepaid expenses and other current assets 47 (690) (192)
Other assets 41 (159) 154
Accounts payable 113 221 43
Partners payable 348 157 95
Accrued expenses and other current liabilities 7,300 1,417 309
Deferred revenue and deposits 123 53 4
Other liabilities 1,239 (634) 3,083
Net cash provided by operating activities 36,314 29,274 24,216
Cash flows from investing activities      
Purchases of property and equipment, net (15,102) (13,915) (6,733)
Purchases of marketable securities (23,910) (14,656) (25,682)
Sales of marketable securities 9,565 12,358 9,444
Maturities of marketable securities 10,152 4,772 2,988
Acquisitions of businesses, net of cash acquired, and purchases of intangible assets (508) (137) (122)
Other investing activities, net (61) (25) (13)
Net cash used in investing activities (19,864) (11,603) (20,118)
Cash flows from financing activities      
Taxes paid related to net share settlement of equity awards (2,337) (3,208) (3,246)
Repurchases of Class A common stock (4,202) (12,879) (1,976)
Principal payments on finance leases (552) 0 0
Net change in overdraft in cash pooling entities (223) 500 0
Other financing activities, net 15 15 (13)
Net cash used in financing activities (7,299) (15,572) (5,235)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash 4 (179) 232
Net increase (decrease) in cash, cash equivalents, and restricted cash 9,155 1,920 (905)
Cash, cash equivalents, and restricted cash at beginning of the period 10,124 8,204 9,109
Cash, cash equivalents, and restricted cash at end of the period 19,279 10,124 8,204
Reconciliation of cash, cash equivalents, and restricted cash to the consolidated balance sheets      
Total cash, cash equivalents, and restricted cash 19,279 8,204 9,109
Supplemental cash flow data      
Cash paid for income taxes, net 5,182 3,762 2,117
Non-cash investing activities:      
Net change in prepaids and liabilities related to property and equipment (153) 918 495
Property and equipment in accounts payable and accrued liabilities $ 1,887 $ 1,955 $ 882