Employee Benefit Plans - Additional Information (Detail) - USD ($)
$ in Millions |
12 Months Ended |
|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2024 |
| Disclosure of defined benefit plans [line items] |
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|
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| Post-employment benefit expense, defined contribution plans |
$ 89
|
$ 78
|
|
| Average Plan [Member] |
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| Disclosure of defined benefit plans [line items] |
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|
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| Retirement age used to for life expectancy |
65 years
|
65 years
|
|
| Participant Plan [Member] |
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| Disclosure of defined benefit plans [line items] |
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| Current age of participants to determine life expectancy at retirement |
40 years
|
40 years
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| Retiring Plan [Member] |
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| Disclosure of defined benefit plans [line items] |
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| Years to retirement difference between current age of participants and retirement age |
25 years
|
25 years
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| Other operating gains, net [member] |
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| Disclosure of defined benefit plans [line items] |
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| Curtailment gains |
$ 4
|
$ 119
|
|
| Medical Cost Trend [Member] |
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| Disclosure of defined benefit plans [line items] |
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| Percentage of reasonably possible change in actuarial assumption |
1.00%
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| Change in defined benefit obligation due to reasonably possible change in actuarial assumption |
$ 7
|
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| Medical cost trend rate |
7.10%
|
|
4.80%
|
| TRGP and TTC Plans [member] |
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| Disclosure of defined benefit plans [line items] |
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| Change in defined benefit obligation due to reasonably possible change in actuarial assumption |
$ 92
|
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| Increase in life expectancy |
1 year
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| TRGP and TTC Plans [member] | Discount Rate [Member] |
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| Disclosure of defined benefit plans [line items] |
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| Percentage of reasonably possible change in actuarial assumption |
0.25%
|
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| Change in defined benefit obligation due to reasonably possible change in actuarial assumption |
$ 145
|
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| TRGP and TTC Plans [member] | Rates of Inflation [Member] |
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| Disclosure of defined benefit plans [line items] |
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| Percentage of reasonably possible change in actuarial assumption |
0.25%
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| Change in defined benefit obligation due to reasonably possible change in actuarial assumption |
$ 25
|
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| TRGP and TTC Plans [member] | Rate of Increase in Salaries [Member] |
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| Disclosure of defined benefit plans [line items] |
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| Percentage of reasonably possible change in actuarial assumption |
0.25%
|
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| Material defined benefit plans [Member] |
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| Disclosure of defined benefit plans [line items] |
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| Employer contribution to defined benefit plans |
$ 38
|
$ 33
|
|
| Expected employer contribution to be made in 2020 |
34
|
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| Funded Plans [member] |
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| Disclosure of defined benefit plans [line items] |
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| Expected employer contribution to be made in 2020 |
$ 6
|
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| Medical cost trend rate |
0.00%
|
0.00%
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| OPEB [Member] |
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| Disclosure of defined benefit plans [line items] |
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| Expected employer contribution to be made in 2020 |
$ 28
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| Bottom of range [member] |
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| Disclosure of defined benefit plans [line items] |
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| Normal Retirement Age |
60 years
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| Top of range [member] |
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| Disclosure of defined benefit plans [line items] |
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| Normal Retirement Age |
65 years
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