Leases - Balance Sheet Information (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Right-of-use assets, operating, net	$ 89	$ 90
Right-of-use assets, financing, net	99	55
Total	188	145
Operating lease liabilities, current	7	6
Financing lease liabilities, current	45	24
Total current lease liabilities	52	30
Operating lease liabilities, non-current	96	97
Financing lease liabilities, non-current	138	110
Total non-current lease liabilities	234	207
Total	$ 286	$ 237
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities	Other current liabilities
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities	Other current liabilities
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization