Long-term Debt and Other Financing Arrangements - Summary of Long-Term Debt (Detail) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total long-term debt, Weighted average interest rate	4.70%	4.67%
Total long-term debt, Carrying Amount	$ 8,463	$ 8,225
Finance lease and other financing obligations	163	161
Bank overdrafts	1	1
Total debt and other financing arrangements	8,627	8,387
Less: Current portion of long-term debt, finance lease and other financing obligations and other short-term borrowings	385	107
Long-term debt and finance lease obligations	8,242	8,280
Total long-term debt, Fair Value	$ 8,384	$ 7,999
Senior secured credit facilities
Debt Instrument [Line Items]
Total long-term debt, Weighted average interest rate	4.19%	4.09%
Total long-term debt, Carrying Amount	$ 4,257	$ 4,020
Total long-term debt, Fair Value	$ 4,208	$ 3,934
Debenture loans
Debt Instrument [Line Items]
Total long-term debt, Weighted average interest rate	5.22%	5.22%
Total long-term debt, Carrying Amount	$ 4,205	$ 4,204
Total long-term debt, Fair Value	4,175	4,064
Senior Secured Term Loan Facility Due 2023 | Libor Based Variable Rate of 4.24%
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	1,106	1,112
Total long-term debt, Fair Value	1,101	1,100
Senior Secured Term Loan Facility Due 2023 | Libor Based Variable Rate of 4.49%
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	2,280	2,285
Total long-term debt, Fair Value	2,239	2,215
Senior Secured Term Loan Facility Due 2023 | Euro Libor Based Variable Rate of 2.50%
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	608	623
Total long-term debt, Fair Value	608	619
Senior Secured Revolving Credit Facility Due 2023 | Euro Libor or Libor based variable rate
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	263
Total long-term debt, Fair Value	260
Senior Debenture Loan Due 2020
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	797	797
Total long-term debt, Fair Value	798	792
Senior debenture loan due 2021
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	621	621
Total long-term debt, Fair Value	627	621
Senior Debenture Loan Due 2022
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	2,291	2,290
Total long-term debt, Fair Value	2,268	2,179
Senior Debenture Loan Due 2025
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	496	496
Total long-term debt, Fair Value	482	472
Other Loans
Debt Instrument [Line Items]
Total long-term debt, Carrying Amount	1	1
Total long-term debt, Fair Value	$ 1	$ 1