Leases - Schedule of Lease Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
ROU assets	$ 2,839	$ 1,386
Lease liabilities (short-term)	449	320
Lease liabilities (long-term)	$ 2,510	$ 1,108
ROU assets, statement of financial position	Other noncurrent assets	Other noncurrent assets
Lease liabilities (short-term), statement of financial position	Other current liabilities	Other current liabilities
Lease liabilities (long-term), statement of financial position	Other noncurrent liabilities	Other noncurrent liabilities