Employee Benefit Plans - Summary Of Defined Benefit Pension Plans' Assets Fair Value (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Total assets	$ 536	$ 510	$ 540
Cash equivalents and short-term investments
Defined Benefit Plan Disclosure [Line Items]
Total assets	20	20
U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	11	59
Non-U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	21	44
Government bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	61	57
Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	45	198
Other assets
Defined Benefit Plan Disclosure [Line Items]
Total assets	139	132
Level 1
Defined Benefit Plan Disclosure [Line Items]
Total assets	25	254
Level 1 | Cash equivalents and short-term investments
Defined Benefit Plan Disclosure [Line Items]
Total assets	4	8
Level 1 | U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	0	49
Level 1 | Non-U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	6	29
Level 1 | Government bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	11	9
Level 1 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	4	159
Level 1 | Other assets
Defined Benefit Plan Disclosure [Line Items]
Total assets	0	0
Level 2
Defined Benefit Plan Disclosure [Line Items]
Total assets	213	197
Level 2 | Cash equivalents and short-term investments
Defined Benefit Plan Disclosure [Line Items]
Total assets	16	12
Level 2 | U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	11	10
Level 2 | Non-U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	15	15
Level 2 | Government bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	50	48
Level 2 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	41	39
Level 2 | Other assets
Defined Benefit Plan Disclosure [Line Items]
Total assets	80	73
Level 3
Defined Benefit Plan Disclosure [Line Items]
Total assets	59	59
Purchases	4	2
Level 3 | Cash equivalents and short-term investments
Defined Benefit Plan Disclosure [Line Items]
Total assets	0	0
Level 3 | U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	0	0
Level 3 | Non-U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total assets	0	0
Level 3 | Government bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	0	0
Level 3 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total assets	0	0
Level 3 | Other assets
Defined Benefit Plan Disclosure [Line Items]
Total assets	59	$ 59
Other assets measured at net asset value | Other assets measured at net asset value
Defined Benefit Plan Disclosure [Line Items]
Total assets	$ 239