DEFERRED POLICY ACQUISITION COSTS AND INSURANCE EXPENSES - Depreciation and Other Amortization Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Deferred Policy Acquisition Costs Disclosures [Abstract]
Depreciation expense	$ 36	$ 40	$ 48
Other amortization expense	5	1	1
Total depreciation and other amortization expense	$ 41	$ 41	$ 49