Employee Benefit Plans (Change in Accumulated Other Comprehensive Loss (Pretax) Relating to Defined Benefit Pension and Other Postretirement Benefits) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain arising during the year	$ (174)
New prior service cost	0
Amortization of actuarial loss	12	$ 20	$ 15
Amortization of prior service credit	11	54	59
Foreign currency translation adjustments	0
Impact of settlements	0
Net decrease	(175)
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain arising during the year	(60)
New prior service cost	(5)
Amortization of actuarial loss	34	$ 39	$ 71
Amortization of prior service credit	0
Foreign currency translation adjustments	(9)
Impact of settlements	(6)
Net decrease	$ (114)