Schedule of Long-Term Debt (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011
Debt Instrument [Line Items]
Long-term debt	$ 2,842		$ 3,166
Other	63		39
Total	2,905		3,205
Less: Short-term debt and current portion of long-term debt	57		37
Long-term debt	2,848		3,168
Floating Rate Term Loan Due April 2014
Debt Instrument [Line Items]
Long-term debt			267	[1]
Maturity Dates	April 2014	[1]
Floating Rate Senior Notes
Debt Instrument [Line Items]
Long-term debt	250		250
Maturity Dates	May 2014
7 5/8% Senior Notes
Debt Instrument [Line Items]
Long-term debt			200
Maturity Dates	May 2014
3 1/2% Convertible Senior Notes
Debt Instrument [Line Items]
Long-term debt	128		345
Maturity Dates	October 2014
7 3/4% Senior Notes
Debt Instrument [Line Items]
Long-term debt			375
Maturity Dates	May 2016
Floating Rate Term Loan Due May 2016
Debt Instrument [Line Items]
Long-term debt	49	[1]	20	[1]
Maturity Dates	May 2016	[1]
4 7/8% Senior Notes
Debt Instrument [Line Items]
Long-term debt	300
Maturity Dates	November 2017
9 5/8% Senior Notes
Debt Instrument [Line Items]
Long-term debt	446		445
Maturity Dates	March 2018
Floating Rate Term Loan Due September 2018
Debt Instrument [Line Items]
Long-term debt			412	[1]
Maturity Dates	September 2018	[1]
8 1/4% Senior Notes
Debt Instrument [Line Items]
Long-term debt	730		602
Maturity Dates	January 2019
Floating Rate Term Loan Due March 2019
Debt Instrument [Line Items]
Long-term debt	689	[1]
Maturity Dates	March 2019	[1]
9 3/4% Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 250		$ 250
Maturity Dates	March 2020

[1] The floating rate term loans are part of the Company's senior credit facility, which includes its revolving credit facility maturing 2016, and is secured by pledges of all of the capital stock of all of the Company's domestic subsidiaries and up to 66% of the capital stock of each direct foreign subsidiary, subject to certain exceptions, and liens on substantially all of the Company's intellectual property and certain other real and personal property.