Condensed Consolidated Statements Of Cash Flows (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net income	$ 329	$ 380
Adjustment for discontinued operations	9	7
Adjustments to reconcile net income to net cash provided by operating activities from continuing operations:
Depreciation and other amortization	144	142
Amortization of acquisition-related intangible assets	115	110
Share-based compensation	29	29
Deferred income taxes	36	21
Loss on early debt extinguishment	85
Dividend from unconsolidated affiliate	12
Settlement of interest rate hedge contracts	6
Other non-cash items	(23)	(18)
Changes in assets and liabilities, net of effects from acquisitions:
Trade accounts receivable	6	17
Prepaid expenses and other assets	(30)	(5)
Accounts payable and other liabilities	12	(22)
Deferred revenue	(37)	(7)
Net cash provided by operating activities from continuing operations	681	654
Cash flows from investing activities:
Capital expenditures, including capitalization of software costs	(144)	(129)
Payments for acquisitions of businesses, net of cash acquired	(511)	(9)
Dividend from unconsolidated affiliate	42
Other investing activities	(4)	(4)
Net cash used in investing activities from continuing operations	(617)	(142)
Cash flows from financing activities:
Proceeds from long-term debt	1,044	748
Repayments of long-term debt, including premium and costs	(1,080)	(682)
Proceeds from revolving credit facility, net	120
Issuance of common stock and treasury stock	63	41
Purchases of treasury stock	(484)	(254)
Other financing activities	(2)	(8)
Net cash used in financing activities from continuing operations	(339)	(155)
Net change in cash and cash equivalents from continuing operations	(275)	357
Net cash flows from discontinued operations	(7)	23
Beginning balance	563	363
Ending balance	$ 281	$ 743