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Financial Instruments - Foreign Exchange Forward Contracts Representing Commitments to Buy and Sell Various Foreign Currencies (Detail) - 12 months ended Dec. 31, 2019 Kč in Millions, $ in Millions, $ in Millions | USD ($) | CZK (Kč) | MXN ($)
--- | --- | --- | ---
Canada, Dollars |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ (1,369) |  |
Canada, Dollars | 2020 [Member] | US Dollar [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Purchases Exchange Rate | 1.31238 |  |
Foreign exchange forward contract, Sales Exchange Rate | 0.76562 |  |
Canada, Dollars | 2020 [Member] | Long [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ 173 |  |
Canada, Dollars | 2020 [Member] | Short [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ (759) |  |
Canada, Dollars | 2021 [Member] | US Dollar [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Purchases Exchange Rate | 1.31855 |  |
Foreign exchange forward contract, Sales Exchange Rate | 0.76856 |  |
Canada, Dollars | 2021 [Member] | Long [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ 19 |  |
Canada, Dollars | 2021 [Member] | Short [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ (479) |  |
Canada, Dollars | 2022 [Member] | US Dollar [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Purchases Exchange Rate | 1.32105 |  |
Foreign exchange forward contract, Sales Exchange Rate | 0.76649 |  |
Canada, Dollars | 2022 [Member] | Long [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ 6 |  |
Canada, Dollars | 2022 [Member] | Short [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ (263) |  |
Canada, Dollars | 2023 [Member] | US Dollar [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Sales Exchange Rate | 0.76140 |  |
Canada, Dollars | 2023 [Member] | Short [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ (52) |  |
Canada, Dollars | 2024 [Member] | US Dollar [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Sales Exchange Rate | 0.75235 |  |
Canada, Dollars | 2024 [Member] | Short [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ (14) |  |
United States of America, Dollars |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount |  |  | $ 10,069
United States of America, Dollars | 2020 [Member] | Mexican Peso [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Purchases Exchange Rate | 0.04824 |  |
Foreign exchange forward contract, Sales Exchange Rate | 20.37835 |  |
United States of America, Dollars | 2020 [Member] | Long [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount |  |  | 6,271
United States of America, Dollars | 2020 [Member] | Short [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount |  |  | (25)
United States of America, Dollars | 2021 [Member] | Mexican Peso [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Purchases Exchange Rate | 0.04624 |  |
United States of America, Dollars | 2021 [Member] | Long [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount |  |  | 2,749
United States of America, Dollars | 2022 [Member] | Mexican Peso [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Purchases Exchange Rate | 0.04675 |  |
United States of America, Dollars | 2022 [Member] | Long [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount |  |  | $ 1,074
Euro Member Countries, Euro |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ 206 | Kč 7,626 |
Euro Member Countries, Euro | 2020 [Member] | US Dollar [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Purchases Exchange Rate | 0.85601 |  |
Foreign exchange forward contract, Sales Exchange Rate | 1.15358 |  |
Euro Member Countries, Euro | 2020 [Member] | Czech Koruna [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Purchases Exchange Rate | 0.03834 |  |
Euro Member Countries, Euro | 2020 [Member] | Long [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ 196 | 4,582 |
Euro Member Countries, Euro | 2020 [Member] | Short [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ (117) |  |
Euro Member Countries, Euro | 2021 [Member] | US Dollar [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Purchases Exchange Rate | 0.82944 |  |
Foreign exchange forward contract, Sales Exchange Rate | 1.21681 |  |
Euro Member Countries, Euro | 2021 [Member] | Czech Koruna [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Purchases Exchange Rate | 0.03757 |  |
Euro Member Countries, Euro | 2021 [Member] | Long [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ 89 | 2,576 |
Euro Member Countries, Euro | 2021 [Member] | Short [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ (34) |  |
Euro Member Countries, Euro | 2022 [Member] | US Dollar [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Purchases Exchange Rate | 0.81676 |  |
Foreign exchange forward contract, Sales Exchange Rate | 1.21233 |  |
Euro Member Countries, Euro | 2022 [Member] | Czech Koruna [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Purchases Exchange Rate | 0.03762 |  |
Euro Member Countries, Euro | 2022 [Member] | Long [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ 48 | Kč 468 |
Euro Member Countries, Euro | 2022 [Member] | Short [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ (4) |  |
Euro Member Countries, Euro | 2023 [Member] | US Dollar [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Purchases Exchange Rate | 0.81607 |  |
Foreign exchange forward contract, Sales Exchange Rate | 1.19193 |  |
Euro Member Countries, Euro | 2023 [Member] | Long [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ 23 |  |
Euro Member Countries, Euro | 2023 [Member] | Short [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ (2) |  |
Euro Member Countries, Euro | 2024 [Member] | US Dollar [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign exchange forward contract, Sales Exchange Rate | 0.83511 |  |
Euro Member Countries, Euro | 2024 [Member] | Short [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ 7 |  |

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