Condensed Consolidating Balance Sheet (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Assets
Cash and cash equivalents	$ 307	$ 400	$ 356	$ 358
Trade accounts receivable, net	752	751
Prepaid expenses and other current assets	488	421
Total current assets	1,547	1,572
Intangible assets, net	2,101	2,142
Goodwill	5,215	5,216
Other long-term assets	610	583
Total assets	9,473	9,513
Liabilities and Shareholders' Equity
Accounts payable and accrued expenses	884	756
Current maturities of long-term debt	92	92
Deferred revenue	462	484
Total current liabilities	1,438	1,332
Long-term debt	3,756	3,756
Other long-term liabilities	836	840
Total liabilities	6,030	5,928
Total shareholders' equity	3,443	3,585
Total liabilities and shareholders' equity	9,473	9,513
Eliminations
Assets
Investments in consolidated affiliates	(10,303)	(10,122)
Total assets	(10,303)	(10,122)
Liabilities and Shareholders' Equity
Total shareholders' equity	(10,303)	(10,122)
Total liabilities and shareholders' equity	(10,303)	(10,122)
Parent Company
Assets
Cash and cash equivalents	30	139	84	85
Prepaid expenses and other current assets	59	81
Total current assets	89	220
Investments in consolidated affiliates	10,303	10,122
Intangible assets, net	23	22
Other long-term assets	41	33
Total assets	10,456	10,397
Liabilities and Shareholders' Equity
Accounts payable and accrued expenses	155	87
Current maturities of long-term debt	90	90
Total current liabilities	245	177
Long-term debt	3,755	3,754
Due to (from) consolidated affiliates	2,247	2,108
Other long-term liabilities	766	773
Total liabilities	7,013	6,812
Total shareholders' equity	3,443	3,585
Total liabilities and shareholders' equity	10,456	10,397
Guarantor Subsidiaries
Assets
Cash and cash equivalents	91	76	61	66
Trade accounts receivable, net	475	465
Prepaid expenses and other current assets	246	195
Total current assets	812	736
Intangible assets, net	1,826	1,866
Goodwill	4,154	4,150
Other long-term assets	475	448
Total assets	7,267	7,200
Liabilities and Shareholders' Equity
Accounts payable and accrued expenses	505	463
Current maturities of long-term debt	2	2
Deferred revenue	283	292
Total current liabilities	790	757
Long-term debt	1	2
Due to (from) consolidated affiliates	(1,737)	(1,683)
Other long-term liabilities	26	25
Total liabilities	(920)	(899)
Total shareholders' equity	8,187	8,099
Total liabilities and shareholders' equity	7,267	7,200
Non-Guarantor Subsidiaries
Assets
Cash and cash equivalents	186	185	211	207
Trade accounts receivable, net	277	286
Prepaid expenses and other current assets	183	145
Total current assets	646	616
Intangible assets, net	252	254
Goodwill	1,061	1,066
Other long-term assets	94	102
Total assets	2,053	2,038
Liabilities and Shareholders' Equity
Accounts payable and accrued expenses	224	206
Deferred revenue	179	192
Total current liabilities	403	398
Due to (from) consolidated affiliates	(510)	(425)
Other long-term liabilities	44	42
Total liabilities	(63)	15
Total shareholders' equity	2,116	2,023
Total liabilities and shareholders' equity	$ 2,053	$ 2,038