Long-term Debt and Other Financing Arrangements - Summary of Long-Term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Total long-term debt, Weighted average interest rate	4.04%	4.04%
Total long-term debt, Carrying Amount	$ 7,763	$ 7,196
Capital lease and other financing obligations, Carrying Amount	158	142
Bank Overdrafts	5
Total debt and other financing arrangements	7,926	7,338
Less: Current portion of long-term debt, capital lease and other financing obligations and other short-term borrowings	188	310
Long-term debt and capital lease obligations	7,738	7,028
Total long-term debt, Fair Value	$ 7,918	$ 7,222
Senior secured credit facilities
Debt Instrument [Line Items]
Total long-term debt, Weighted average interest rate	2.95%	2.78%
Total long-term debt, Carrying Amount	$ 4,059	$ 3,496
Total long-term debt, Fair Value	$ 4,109	$ 3,497
Debenture loans
Debt Instrument [Line Items]
Total long-term debt, Weighted average interest rate	5.22%	5.22%
Total long-term debt, Carrying Amount	$ 3,697	$ 3,693
Total long-term debt, Fair Value	3,802	3,718
Senior Secured Term Loan Facility Due 2019 | Libor Based Variable Rate of 2.29%
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount		1,455
Total long-term debt, Fair Value		1,454
Senior Secured Term Loan Facility Due 2019 | Libor Based Variable Rate of 2.65%
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	1,768
Total long-term debt, Fair Value	1,785
Senior Secured Term Loan Facility Due 2019 | Euro LIBOR or LIBOR Based Variable Rate
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount		164
Total long-term debt, Fair Value		163
Senior Secured Term Loan Due 2017 | Libor Based Variable Rate
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount		492
Total long-term debt, Fair Value		492
Senior Secured Term Loan Facility Due 2021 | Libor Based Variable Rate
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount		1,080
Total long-term debt, Fair Value		1,082
Senior Secured Term Loan Facility Due 2021 | Euro Libor Based Variable Rate of 2.11%
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	399
Total long-term debt, Fair Value	402
Senior Secured Term Loan Facility Due 2021 | Euro Libor Based Variable Rate of 2.82%
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount		305
Total long-term debt, Fair Value		306
Senior Secured Term Loan Facility Due 2023 | Libor Based Variable Rate
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	1,892
Total long-term debt, Fair Value	1,921
Senior Debenture Loan Due 2020
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	794	792
Total long-term debt, Fair Value	813	808
Senior debenture loan due 2021
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	618	617
Total long-term debt, Fair Value	648	640
Senior Debenture Loan Due 2022
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	2,285	2,284
Total long-term debt, Fair Value	2,340	2,270
Other Loans
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	7	7
Total long-term debt, Fair Value	$ 7	$ 7