Pension and Other Benefit Plans - Changes in Projected Benefit Obligation, Plan Assets and Funded Status of Plans (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Amounts Recognized in Balance Sheet:
Postretirement Benefits	$ (165)	$ (231)
Other Assets	904	1,034
United States
Change in Projected Benefit Obligations:
Projected benefit obligation at beginning of year	4,668	4,940
Service cost	37	44	$ 55
Interest cost	137	127	148
Actuarial gains	(1,152)	(211)
Benefits paid	(375)	(232)
Projected benefit obligation at end of year	3,315	4,668	4,940
Change in Plan Assets:
Plan assets at fair value at beginning of year	4,696	4,776
Actual return on plan assets	(933)	145
Company contributions	8	7
Benefits paid	(375)	(232)
Plan assets at fair value at end of year	3,396	4,696	4,776
Asset	81	28
Amounts Recognized in Balance Sheet:
Postretirement Benefits	(151)	(212)
Other Assets	232	240
Total of post retirement benefits	81	28
Amounts Recognized in Accumulated Other Comprehensive Loss:
Actuarial losses	255	276
Accumulated benefit obligation	3,221	4,484
International
Change in Projected Benefit Obligations:
Projected benefit obligation at beginning of year	10,618	11,140
Service cost	101	117	140
Interest cost	298	267	301
Contribution by plan participants	47	53
Actuarial gains	(3,140)	(586)
Currency effect	(148)	(18)
Benefits paid	(363)	(355)
Other	185
Projected benefit obligation at end of year	7,598	10,618	11,140
Change in Plan Assets:
Plan assets at fair value at beginning of year	11,221	10,493
Actual return on plan assets	(2,834)	1,040
Currency effect	(188)	(28)
Company contributions	18	18
Contributions by plan participants	47	53
Benefits paid	(363)	(355)
Other	225
Plan assets at fair value at end of year	8,126	11,221	$ 10,493
Asset	528	603
Amounts Recognized in Balance Sheet:
Postretirement Benefits	(14)	(19)
Other Assets	542	622
Total of post retirement benefits	528	603
Amounts Recognized in Accumulated Other Comprehensive Loss:
Actuarial losses	1,366	1,174
Accumulated benefit obligation	$ 7,454	$ 10,370