Long-term Debt and Other Financing Arrangements - Summary of Long-Term Debt (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Total long-term debt, Weighted average interest rate	3.79%	4.28%
Total long-term debt, Carrying Amount	$ 6,744us-gaap_LongTermDebt	$ 6,529us-gaap_LongTermDebt
Capital lease and other financing obligations, Carrying Amount	118us-gaap_CapitalLeaseObligations	111us-gaap_CapitalLeaseObligations
Total debt and other financing arrangements	6,862us-gaap_DebtAndCapitalLeaseObligations	6,640us-gaap_DebtAndCapitalLeaseObligations
Less: Current portion of long-term debt, capital lease and other financing obligations and other short-term borrowings	397us-gaap_DebtCurrent	148us-gaap_DebtCurrent
Long-term debt and capital lease obligations	6,465	6,492
Total long-term debt, Fair Value	6,727us-gaap_LongTermDebtFairValue	6,612us-gaap_LongTermDebtFairValue
Senior secured credit facilities
Debt Instrument [Line Items]
Total long-term debt, Weighted average interest rate	2.65%	2.89%
Total long-term debt, Carrying Amount	3,758	4,016
Total long-term debt, Fair Value	3,731	4,020
Debenture Loans
Debt Instrument [Line Items]
Total long-term debt, Weighted average interest rate	5.23%	6.51%
Total long-term debt, Carrying Amount	2,978	2,508
Total long-term debt, Fair Value	2,988	2,587
Senior Secured Term Loan Facility Due 2016 \| Libor Based Variable Rate
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount		2,507
Total long-term debt, Fair Value		2,512
Senior Secured Term Loan Due 2017 \| Libor Based Variable Rate \| 2.15% Libor Based Variable Rate
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount		1,115
Total long-term debt, Fair Value		1,113
Senior Secured Term Loan Due 2017 \| Libor Based Variable Rate \| 2.41% Libor Based Variable Rate
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	497
Total long-term debt, Fair Value	493
Senior Secured Term Loan Facility Due 2019 \| Libor Based Variable Rate
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	1,542
Total long-term debt, Fair Value	1,533
Senior Secured Term Loan Facility Due 2019 \| Euro LIBOR or LIBOR Based Variable Rate
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	280
Total long-term debt, Fair Value	274
Senior Secured Term Loan Facility Due 2021 \| Libor Based Variable Rate
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	1,094
Total long-term debt, Fair Value	1,088
Senior Secured Term Loan Facility Due 2021 \| Euro Libor Based Variable Rate
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	345
Total long-term debt, Fair Value	343
Senior Secured Term Loan Facility Due 2022 \| Euro Libor Based Variable Rate
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount		394
Total long-term debt, Fair Value		395
Senior Debenture Loan Due 2018
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount		1,083
Total long-term debt, Fair Value		1,172
Senior Debenture Loan Due 2020
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	800	800
Total long-term debt, Fair Value	801	779
Senior Debenture Loan Due 2022
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	1,553
Total long-term debt, Fair Value	1,554
Senior Debenture Loan Due 2021
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	625	625
Total long-term debt, Fair Value	633	636
Other Loans
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	8	5
Total long-term debt, Fair Value	$ 8	$ 5

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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- Definition

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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- Definition

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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- Definition

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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- Definition

Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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-Name Accounting Standards Codification

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

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- Definition

Weighted average interest rate of long-term debt outstanding.

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No definition available.

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