Employee Benefit Plans - Reconciliation of Changes in Benefit Obligations, Funded Status and Amounts Recognized in Consolidated Balance Sheets (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension Plans
Benefit Obligations:
Benefit obligation at beginning of year	$ 220	$ 235
Service cost	7	9	$ 10
Interest cost	6	5	6
Benefits paid	(15)	(14)
Actuarial gain	(57)	(15)
Benefit obligation at end of year	161	220	235
Fair Value of Plan Assets:
Fair value of plan assets at beginning of year	213	228
Actual return on plan assets	(43)	(1)
Employer contributions	3	0
Benefits paid	(15)	(14)
Fair value of plan assets at end of year	158	213	228
Net Funded Status	(3)	(7)
Amounts Recognized in Balance Sheet:
Noncurrent assets	3	1
Current liabilities	0	0
Noncurrent liabilities	(6)	(8)
Total liabilities	(3)	(7)
Accumulated Other Comprehensive Loss:
Prior service credit	1	2
Actuarial (loss) gain	(1)	(8)
Total	0	(6)
Post-retirement Benefits
Benefit Obligations:
Benefit obligation at beginning of year	102	107
Service cost	1	1	1
Interest cost	3	3	3
Benefits paid	(4)	(4)
Actuarial gain	(29)	(5)
Benefit obligation at end of year	73	102	107
Fair Value of Plan Assets:
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	4	3
Benefits paid	(4)	(3)
Fair value of plan assets at end of year	0	0	$ 0
Net Funded Status	(73)	(102)
Amounts Recognized in Balance Sheet:
Noncurrent assets	0	0
Current liabilities	(4)	(4)
Noncurrent liabilities	(69)	(98)
Total liabilities	(73)	(102)
Accumulated Other Comprehensive Loss:
Prior service credit	24	34
Actuarial (loss) gain	27	(3)
Total	$ 51	$ 31