Long-Term Debt (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Senior term loan		$ 1,100
Other borrowings	5	49
Total debt	3,230	3,395
Less: current maturities	(2)	(179)
Long-term debt	3,228	3,216
Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility	280
3.125% senior notes due 2015
Debt Instrument [Line Items]
Senior notes	300	299
3.125% senior notes due 2016
Debt Instrument [Line Items]
Senior notes	600	599
6.8% senior notes due 2017
Debt Instrument [Line Items]
Senior notes	500	500
4.625% senior notes due 2020
Debt Instrument [Line Items]
Senior notes	449	449
4.75% senior notes due 2021
Debt Instrument [Line Items]
Senior notes	399	399
3.5% senior notes due 2022
Debt Instrument [Line Items]
Senior notes	$ 697

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Amount borrowed under the credit facility as of the balance sheet date.

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Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying amount of long-term debt, net of unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Including both current and noncurrent portions, carrying amount as of the balance sheet date of other forms of debt not elsewhere specified in the taxonomy with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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