Financial Instruments - Summary of Debt and Related Derivative Instruments (Detail) - USD ($)
$ in Millions |
Dec. 31, 2021 |
Dec. 31, 2020 |
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
$ 3,786
|
$ 3,772
|
| Derivative financial assets |
(99)
|
(100)
|
| Long-term portion |
3,786
|
3,772
|
| Derivative instrument Asset, Long-term portion |
(99)
|
(100)
|
| At fair value [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Derivative financial assets |
(99)
|
(100)
|
| 2.239% Notes, due 2025 [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Derivative financial assets |
(99)
|
(100)
|
| 2.239% Notes, due 2025 [member] | At fair value [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Derivative financial assets |
(99)
|
(100)
|
| Primary debt instruments [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
3,786
|
3,772
|
| Long-term portion |
3,786
|
3,772
|
| Primary debt instruments [member] | At fair value [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
4,354
|
4,459
|
| Primary debt instruments [member] | 2.239% Notes, due 2025 [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
1,103
|
1,093
|
| Primary debt instruments [member] | 2.239% Notes, due 2025 [member] | At fair value [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
1,119
|
1,151
|
| Primary debt instruments [member] | 4.30% notes, due 2023 [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
599
|
597
|
| Primary debt instruments [member] | 4.30% notes, due 2023 [member] | At fair value [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
631
|
657
|
| Primary debt instruments [member] | 3.85% Notes, Due 2024 [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
241
|
241
|
| Primary debt instruments [member] | 3.85% Notes, Due 2024 [member] | At fair value [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
256
|
266
|
| Primary debt instruments [member] | 3.35% notes, due 2026 [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
497
|
497
|
| Primary debt instruments [member] | 3.35% notes, due 2026 [member] | At fair value [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
531
|
557
|
| Primary debt instruments [member] | 4.50% Notes, Due 2043 [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
116
|
116
|
| Primary debt instruments [member] | 4.50% Notes, Due 2043 [member] | At fair value [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
128
|
130
|
| Primary debt instruments [member] | 5.65% notes, due 2043 [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
342
|
342
|
| Primary debt instruments [member] | 5.65% notes, due 2043 [member] | At fair value [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
478
|
471
|
| Primary debt instruments [member] | 5.50% debentures, due 2035 [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
396
|
395
|
| Primary debt instruments [member] | 5.50% debentures, due 2035 [member] | At fair value [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
516
|
531
|
| Primary debt instruments [member] | 5.85% debentures, due 2040 [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
492
|
491
|
| Primary debt instruments [member] | 5.85% debentures, due 2040 [member] | At fair value [member] |
|
|
| Disclosure of Summary of Debt and Related Derivative Instruments [Line Items] |
|
|
| Borrowings |
$ 695
|
$ 696
|