Condensed Consolidating Balance Sheet (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Assets
Cash and cash equivalents	$ 329	$ 400	$ 320	$ 358
Trade accounts receivable, net	730	751
Prepaid expenses and other current assets	466	421
Total current assets	1,525	1,572
Intangible assets, net	2,070	2,142
Goodwill	5,217	5,216
Other long-term assets	591	583
Total assets	9,403	9,513
Liabilities and Shareholders' Equity
Accounts payable and accrued expenses	834	756
Current maturities of long-term debt	92	92
Deferred revenue	442	484
Total current liabilities	1,368	1,332
Long-term debt	3,756	3,756
Other long-term liabilities	804	840
Total liabilities	5,928	5,928
Total shareholders' equity	3,475	3,585
Total liabilities and shareholders' equity	9,403	9,513
Eliminations
Assets
Due from consolidated affiliates	(2,483)	(2,108)
Investments in consolidated affiliates	(10,504)	(10,122)
Total assets	(12,987)	(12,230)
Liabilities and Shareholders' Equity
Due to consolidated affiliates	(2,483)	(2,108)
Total liabilities	(2,483)	(2,108)
Total shareholders' equity	(10,504)	(10,122)
Total liabilities and shareholders' equity	(12,987)	(12,230)
Parent Company
Assets
Cash and cash equivalents	36	139	32	85
Prepaid expenses and other current assets	49	81
Total current assets	85	220
Investments in consolidated affiliates	10,504	10,122
Intangible assets, net	22	22
Other long-term assets	39	33
Total assets	10,650	10,397
Liabilities and Shareholders' Equity
Accounts payable and accrued expenses	116	87
Current maturities of long-term debt	90	90
Total current liabilities	206	177
Long-term debt	3,755	3,754
Due to consolidated affiliates	2,483	2,108
Other long-term liabilities	731	773
Total liabilities	7,175	6,812
Total shareholders' equity	3,475	3,585
Total liabilities and shareholders' equity	10,650	10,397
Guarantor Subsidiaries
Assets
Cash and cash equivalents	61	76	68	66
Trade accounts receivable, net	475	465
Prepaid expenses and other current assets	250	195
Total current assets	786	736
Due from consolidated affiliates	1,974	1,683
Intangible assets, net	1,797	1,866
Goodwill	4,154	4,150
Other long-term assets	446	448
Total assets	9,157	8,883
Liabilities and Shareholders' Equity
Accounts payable and accrued expenses	508	463
Current maturities of long-term debt	2	2
Deferred revenue	275	292
Total current liabilities	785	757
Long-term debt	1	2
Other long-term liabilities	30	25
Total liabilities	816	784
Total shareholders' equity	8,341	8,099
Total liabilities and shareholders' equity	9,157	8,883
Non-Guarantor Subsidiaries
Assets
Cash and cash equivalents	232	185	220	207
Trade accounts receivable, net	255	286
Prepaid expenses and other current assets	167	145
Total current assets	654	616
Due from consolidated affiliates	509	425
Intangible assets, net	251	254
Goodwill	1,063	1,066
Other long-term assets	106	102
Total assets	2,583	2,463
Liabilities and Shareholders' Equity
Accounts payable and accrued expenses	210	206
Deferred revenue	167	192
Total current liabilities	377	398
Other long-term liabilities	43	42
Total liabilities	420	440
Total shareholders' equity	2,163	2,023
Total liabilities and shareholders' equity	$ 2,583	$ 2,463