Leases - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease, right-of-use asset	$ 1,300
Operating lease, liability	1,426
Operating lease, liability, noncurrent	1,100
New ROU operating lease assets and liabilities entered into	$ 473
Weighted average remaining lease term	8 years 10 months 24 days
Weighted average discount rate	2.00%
Operating lease cost	$ 275	$ 223	$ 239
Cash payments	$ 299
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other noncurrent liabilities
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other noncurrent assets