Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Assets
Cash and cash equivalents	$ 400	$ 358
Trade accounts receivable, less allowance for doubtful accounts	751	661
Deferred income taxes	55	42
Prepaid expenses and other current assets	366	349
Assets of discontinued operations		33
Total current assets	1,572	1,443
Property and equipment, net	266	248
Intangible assets, net	2,142	1,744
Goodwill	5,216	4,705
Other long-term assets	317	357
Total assets	9,513	8,497
Liabilities and Shareholders' Equity
Accounts payable and accrued expenses	756	721
Current maturities of long-term debt	92	2
Deferred revenue	484	379
Liabilities of discontinued operations		3
Total current liabilities	1,332	1,105
Long-term debt	3,756	3,228
Deferred income taxes	713	638
Other long-term liabilities	127	109
Total liabilities	5,928	5,080
Commitments and Contingencies
Shareholders' Equity
Preferred stock, no par value: 25.0 million shares authorized; none issued
Common stock, $0.01 par value: 900.0 million shares authorized; 395.7 million shares issued	4	4
Additional paid-in capital	844	802
Accumulated other comprehensive loss	(60)	(60)
Retained earnings	6,598	5,950
Treasury stock, at cost, 139.0 million and 128.8 million shares	(3,801)	(3,279)
Total shareholders' equity	3,585	3,417
Total liabilities and shareholders' equity	$ 9,513	$ 8,497