Supplemental Disclosures of Cash Flow Information - Summary of Supplemental Cash Flow Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Supplemental disclosure of cash flow information:
Interest paid during the period	$ 20	$ 28
Income taxes paid during the period, net of refunds	0	1
Non-cash investing and financing activities:
Capital expenditures included in accounts payable and accrued expenses	2	6
Transfer of real estate from construction in progress to operating real estate	0	9
Dividends payable	0	11	$ 11
Recognition of right of use operating lease assets and operating lease liabilities	0	28
Financing of insurance	11	14
Escrowed casualty insurance proceeds	$ 0	$ 4