Leases - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease assets	$ 822	$ 802
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	All other assets	All other assets
Operating lease, weighted-average remaining lease term	9 years	8 years
Operating lease, weighted-average discount rate	3.30%	3.70%