Income Taxes - Net Deferred Tax Liability (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Components of Deferred Tax Assets and Liabilities [Abstract]
Deferred revenue	$ 8	$ 11
Employee benefits	97	102
Bad debt reserves	12	7
Pension	13	30
Net operating loss carryforward	29	10
Foreign tax credit	5	4
Operating lease liabilities	59	58
Payroll taxes	0	5
Securities	264	0
Other	10	6
Deferred tax assets before valuation allowance	497	233
Valuation allowance	(7)	(8)
Deferred tax assets	490	225
Depreciable and amortizable assets	282	274
Claims and related salvage	82	89
Investments in affiliates	26	63
Securities	0	65
Operating lease assets	53	52
Unremitted foreign earnings	12	13
Deferred tax liabilities	455	556
Net deferred tax asset	$ 35
Net deferred tax liability		$ 331