Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Supplemental disclosures:
Cash (received for income taxes, net of payments) paid for income taxes, net of refunds	$ (2)	$ 57
Cash paid for interest	81	55
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	12	12
Operating cash flows from finance leases	4	5
Financing cash flows from finance leases	4	4
Non-cash investing activities:
Change in capital expenditures included in accounts payable	$ (5)	$ (4)