Employee Benefit and Retirement Plans - Schedule of Reconciliation of Benefit Obligations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Amounts recognized in the Consolidated Balance Sheets:
Accumulated benefit obligation	$ 2,000	$ 2,100
United States
Change in plan assets:
Fair value of plan assets at beginning of year	1,228
Fair value of plan assets at end of year	1,161	1,228
International
Change in plan assets:
Fair value of plan assets at beginning of year	580
Fair value of plan assets at end of year	627	580
Pension Benefits | United States
Change in benefit obligation:
Benefit obligation at beginning of year	1,449	1,348
Service cost	0	1	$ 1
Interest cost	35	49	46
Actuarial loss	133	151
Amendments	0	0
Currency translation	0	0
Benefits paid	(95)	(100)
Acquisitions and dispositions, net	2	0
Curtailments, settlements and other	(167)	0
Benefit obligation at end of year	1,357	1,449	1,348
Change in plan assets:
Fair value of plan assets at beginning of year	1,228	1,105
Actual return on plan assets	178	213
Contributions	17	10
Currency translation	0	0
Benefits paid	(95)	(100)
Settlements and other	(167)	0
Fair value of plan assets at end of year	1,161	1,228	1,105
Funded status at end of year	(196)	(221)
Amounts recognized in the Consolidated Balance Sheets:
Prepaid benefit cost, included in other assets	0	0
Accrued current benefit cost—other accrued liabilities	(11)	(15)
Accrued noncurrent benefit cost— other noncurrent liabilities	(185)	(206)
Net amount recognized	$ (196)	$ (221)
Discount rate	2.16%	3.06%
Long-term rate of compensation increase	3.00%	3.00%
Current health care cost trend rates	0.00%	0.00%
Ultimate health care cost trend rates	0.00%	0.00%
Pension Benefits | International
Change in benefit obligation:
Benefit obligation at beginning of year	$ 626	$ 581
Service cost	4	6	6
Interest cost	9	13	13
Actuarial loss	29	45
Amendments	1	1
Currency translation	29	15
Benefits paid	(21)	(22)
Acquisitions and dispositions, net	0	0
Curtailments, settlements and other	(9)	(13)
Benefit obligation at end of year	668	626	581
Change in plan assets:
Fair value of plan assets at beginning of year	580	532
Actual return on plan assets	47	51
Contributions	8	13
Currency translation	22	19
Benefits paid	(21)	(22)
Settlements and other	(9)	(13)
Fair value of plan assets at end of year	627	580	532
Funded status at end of year	(41)	(46)
Amounts recognized in the Consolidated Balance Sheets:
Prepaid benefit cost, included in other assets	104	89
Accrued current benefit cost—other accrued liabilities	(5)	(4)
Accrued noncurrent benefit cost— other noncurrent liabilities	(140)	(131)
Net amount recognized	$ (41)	$ (46)
Discount rate	1.22%	1.79%
Long-term rate of compensation increase	2.18%	2.31%
Current health care cost trend rates	0.00%	0.00%
Ultimate health care cost trend rates	0.00%	0.00%
Postretirement Benefits
Change in benefit obligation:
Benefit obligation at beginning of year	$ 52	$ 53
Service cost	0	0
Interest cost	1	2	2
Actuarial loss	2	2
Amendments	0	0
Currency translation	0	0
Benefits paid	(4)	(5)
Acquisitions and dispositions, net	0	0
Curtailments, settlements and other	0	0
Benefit obligation at end of year	51	52	53
Change in plan assets:
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Contributions	4	0
Currency translation	0	0
Benefits paid	(4)	0
Settlements and other	0	0
Fair value of plan assets at end of year	0	0	$ 0
Funded status at end of year	(51)	(52)
Amounts recognized in the Consolidated Balance Sheets:
Prepaid benefit cost, included in other assets	0	0
Accrued current benefit cost—other accrued liabilities	(5)	(6)
Accrued noncurrent benefit cost— other noncurrent liabilities	(46)	(46)
Net amount recognized	$ (51)	$ (52)
Discount rate	1.80%	2.80%
Long-term rate of compensation increase	0.00%	0.00%
Current health care cost trend rates	6.48%	6.74%
Ultimate health care cost trend rates	4.50%	4.50%