Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income	$ 305	$ 334
Adjustment for discontinued operations	0	0
Adjustments to reconcile net income to net cash provided by operating activities from continuing operations:
Depreciation and other amortization	107	96
Amortization of acquisition-related intangible assets	99	103
Share-based compensation	36	27
Excess tax benefits from share-based awards	(29)	(12)
Deferred income taxes	(9)	(27)
Income from investment in unconsolidated affiliate	(1)	(4)
Loss on early debt extinguishment	85
Dividends from unconsolidated affiliate		45
Other operating activities	1
Changes in assets and liabilities:
Trade accounts receivable	53	25
Prepaid expenses and other assets	(40)	(24)
Accounts payable and other liabilities	38	46
Deferred revenue	(45)	(40)
Net cash provided by operating activities from continuing operations	600	569
Cash flows from investing activities:
Capital expenditures, including capitalization of software costs	(203)	(150)
Other investing activities		1
Net cash used in investing activities from continuing operations	(203)	(149)
Cash flows from financing activities:
Debt proceeds	2,392	544
Debt repayments, including redemption and other costs	(2,055)	(544)
Proceeds from issuance of treasury stock	47	26
Purchases of treasury stock, including employee shares withheld for tax obligations	(574)	(528)
Excess tax benefits from share-based awards	29	12
Other financing activities		(1)
Net cash used in financing activities from continuing operations	(161)	(491)
Net change in cash and cash equivalents from continuing operations	236	(71)
Net cash flows from (to) discontinued operations	0	0
Beginning balance	294	400
Ending balance	$ 530	$ 329