Employee Benefit Plans - Summary Of Defined Benefit Pension Plans' Assets Fair Value (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Total assets	$ 772	$ 722	$ 649
Cash equivalents and short-term investments
Defined Benefit Plan Disclosure [Line Items]
Total assets	62	69
U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	160	169
Non-U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	145	167
Government bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	17	6
Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	185	137
Other assets
Defined Benefit Plan Disclosure [Line Items]
Total assets	203	174
Level 1
Defined Benefit Plan Disclosure [Line Items]
Total assets	330	307
Level 1 | Cash equivalents and short-term investments
Defined Benefit Plan Disclosure [Line Items]
Total assets	14	19
Level 1 | U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	115	113
Level 1 | Non-U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	56	64
Level 1 | Government bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	6	5
Level 1 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	134	105
Level 1 | Other assets
Defined Benefit Plan Disclosure [Line Items]
Total assets	5	1
Level 2
Defined Benefit Plan Disclosure [Line Items]
Total assets	396	415
Level 2 | Cash equivalents and short-term investments
Defined Benefit Plan Disclosure [Line Items]
Total assets	48	50
Level 2 | U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	45	56
Level 2 | Non-U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	89	103
Level 2 | Government bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	11	1
Level 2 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	51	32
Level 2 | Other assets
Defined Benefit Plan Disclosure [Line Items]
Total assets	152	$ 173
Level 3
Defined Benefit Plan Disclosure [Line Items]
Total assets	46
Level 3 | Cash equivalents and short-term investments
Defined Benefit Plan Disclosure [Line Items]
Total assets	0
Level 3 | U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	0
Level 3 | Non-U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	0
Level 3 | Government bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	0
Level 3 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	0
Level 3 | Other assets
Defined Benefit Plan Disclosure [Line Items]
Total assets	$ 46