CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income		$ 273	$ 966	$ 892
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes		(181)	(9)	(27)
Provision for inventories		33	42	43
Depreciation and amortization		888	829	95
Amortization of capitalized software development costs and intellectual property licenses	[1]	311	321	399
Premium payment for early redemption of note		0	63	0
Amortization of debt discount, financing costs, and non-cash write-off due to extinguishment of debts		24	50	7
Share-based compensation expense	[2]	176	147	92
Other		28	4	0
Changes in operating assets and liabilities, net of effect from business acquisitions:
Accounts receivable, net		(165)	84	(40)
Inventories		(26)	32	(54)
Software development and intellectual property licenses		(301)	(362)	(350)
Other assets		(97)	(10)	21
Deferred revenues		220	(35)	(27)
Accounts payable		85	(50)	(25)
Accrued expenses and other liabilities		945	83	233
Net cash provided by operating activities		2,213	2,155	1,259
Cash flows from investing activities:
Proceeds from maturities of available-for-sale investments		80	0	145
Purchases of available-for-sale investments		(135)	0	(145)
Acquisition of business, net of cash acquired (see Note 20)		0	(4,588)	(46)
Release (deposit) of cash in escrow		0	3,561	(3,561)
Capital expenditures		(155)	(136)	(111)
Other investing activities		13	(14)	2
Net cash used in investing activities		(197)	(1,177)	(3,716)
Cash flows from financing activities:
Proceeds from issuance of common stock to employees		178	106	106
Tax payment related to net share settlements on restricted stock units		(56)	(115)	(83)
Dividends paid		(226)	(195)	(170)
Proceeds from debt issuances, net of discounts		3,741	6,878	0
Repayment of long-term debt		(4,251)	(6,104)	(250)
Premium payment for early redemption of note		0	(63)	0
Proceeds received from shareholder settlement (see Note 19)		0	0	202
Other financing activities		(10)	(7)	(7)
Net cash (used in) provided by financing activities		(624)	500	(202)
Effect of foreign exchange rate changes on cash and cash equivalents		76	(56)	(366)
Net increase (decrease) in cash and cash equivalents		1,468	1,422	(3,025)
Cash and cash equivalents at beginning of period		3,245	1,823	4,848
Cash and cash equivalents at end of period		$ 4,713	$ 3,245	$ 1,823

[1] Excludes deferral and amortization of share-based compensation expense.

[2] Includes the net effects of capitalization, deferral, and amortization of share-based compensation expense.