Condensed Consolidating Balance Sheet (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 307	$ 337	$ 281	$ 563
Trade accounts receivable, net	643	666
Prepaid expenses and other current assets	375	353
Total current assets	1,325	1,356
Intangible assets, net	1,782	1,881
Goodwill	4,719	4,720
Other long-term assets	627	591
Total assets	8,453	8,548
LIABILITIES AND SHAREHOLDERS' EQUITY
Total current liabilities	1,051	1,384
Long-term debt	3,447	3,216
Other long-term liabilities	697	690
Total liabilities	5,195	5,290
Total shareholders' equity	3,258	3,258
Total liabilities and shareholders' equity	8,453	8,548
Parent Company
ASSETS
Cash and cash equivalents	41	73	38	343
Prepaid expenses and other current assets	13	25
Total current assets	54	98
Investments in consolidated affiliates	8,336	7,864
Intangible assets, net	22	15
Other long-term assets	55	28
Total assets	8,467	8,005
LIABILITIES AND SHAREHOLDERS' EQUITY
Total current liabilities	91	397
Long-term debt	3,443	3,171
Due to (from) consolidated affiliates	1,020	524
Other long-term liabilities	655	655
Total liabilities	5,209	4,747
Total shareholders' equity	3,258	3,258
Total liabilities and shareholders' equity	8,467	8,005
Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	54	71	66	68
Trade accounts receivable, net	392	402
Prepaid expenses and other current assets	195	167
Total current assets	641	640
Intangible assets, net	1,510	1,597
Goodwill	3,709	3,709
Other long-term assets	474	452
Total assets	6,334	6,398
LIABILITIES AND SHAREHOLDERS' EQUITY
Total current liabilities	611	616
Long-term debt	4	2
Due to (from) consolidated affiliates	(757)	(344)
Other long-term liabilities	19	12
Total liabilities	(123)	286
Total shareholders' equity	6,457	6,112
Total liabilities and shareholders' equity	6,334	6,398
Non-Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	212	193	177	152
Trade accounts receivable, net	251	264
Prepaid expenses and other current assets	167	161
Total current assets	630	618
Intangible assets, net	250	269
Goodwill	1,010	1,011
Other long-term assets	98	111
Total assets	1,988	2,009
LIABILITIES AND SHAREHOLDERS' EQUITY
Total current liabilities	349	371
Long-term debt		43
Due to (from) consolidated affiliates	(263)	(180)
Other long-term liabilities	23	23
Total liabilities	109	257
Total shareholders' equity	1,879	1,752
Total liabilities and shareholders' equity	1,988	2,009
Eliminations
ASSETS
Investments in consolidated affiliates	(8,336)	(7,864)
Total assets	(8,336)	(7,864)
LIABILITIES AND SHAREHOLDERS' EQUITY
Total shareholders' equity	(8,336)	(7,864)
Total liabilities and shareholders' equity	$ (8,336)	$ (7,864)