Leases - Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease right-of-use assets	$ 767	$ 299
Current operating lease obligation	109	41
Operating Lease, Liability, Noncurrent	670	265
Operating Lease, Liability	779	306
Finance Lease, Right-of-Use Asset	21	8
Current financing lease obligation	5	3
Finance Lease, Liability, Noncurrent	15	4
Finance Lease, Liability	$ 20	$ 7
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets	Other assets
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities	Other current liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities