CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities
Net income	$ 2,239	$ 977
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	810	737
Lease abandonment	(31)	108
Share-based compensation	941	633
Deferred income taxes	(30)	21
Tax benefit from share-based award activity	1,354	277
Excess tax benefit from share-based award activity	(1,365)	(285)
Other	5	39
Changes in assets and liabilities:
Accounts receivable	(264)	(145)
Prepaid expenses and other current assets	(45)	433
Other assets	(158)	(35)
Accounts payable	12	(17)
Partners payable	(22)	2
Accrued expenses and other current liabilities	198	(105)
Deferred revenue and deposits	3	6
Other liabilities	227	345
Net cash provided by operating activities	3,874	2,991
Cash flows from investing activities
Purchases of property and equipment	(1,314)	(879)
Purchases of marketable securities	(6,215)	(4,364)
Sales of marketable securities	7,391	2,433
Maturities of marketable securities	1,710	2,954
Acquisitions of businesses, net of cash acquired, and purchases of intangible assets	(754)	(237)
Change in restricted cash and deposits	(113)	4
Other investing activities, net	(2)	(1)
Net cash provided by (used in) investing activities	703	(90)
Cash flows from financing activities
Taxes paid related to net share settlement of equity awards	(3)	(706)
Proceeds from exercise of stock options	7	20
Repayment of long-term debt	0	(1,500)
Principal payments on capital lease obligations	(199)	(291)
Excess tax benefit from share-based award activity	1,365	285
Net cash provided by (used in) financing activities	1,170	(2,192)
Effect of exchange rate changes on cash and cash equivalents	(71)	7
Net increase in cash and cash equivalents	5,676	716
Cash and cash equivalents at beginning of period	3,323	2,384
Cash and cash equivalents at end of period	8,999	3,100
Cash paid during the period for:
Interest	11	33
Income taxes	107	61
Cash received during the period for:
Income taxes	6	419
Non-cash investing and financing activities:
Fair value of shares issued related to acquisitions of businesses	1,368	77
Net change in accounts payable and accrued expenses and other current liabilities related to property and equipment additions
Non-cash investing and financing activities:
Property and equipment expenditures incurred but not yet paid	38	31
Property and equipment acquired under capital leases
Non-cash investing and financing activities:
Property and equipment expenditures incurred but not yet paid	$ 0	$ 11