Leases - Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Balances for operating and finance ROU assets and lease liabilities
Operating lease assets	$ 291	$ 215
Operating lease assets Balance Sheet Classification	Other assets	Other assets
Finance lease assets	$ 38	$ 44
Finance lease assets Balance Sheet Classification	Other assets	Other assets
Total lease assets	$ 329	$ 259
Operating lease liability	$ 341	$ 254
Operating lease liabilities Balance Sheet Classification	Other liabilities	Other liabilities
Finance lease liabilities	$ 40	$ 44
Finance lease liabilities Balance Sheet Classification	Long-term debt	Long-term debt
Total lease liabilities	$ 381	$ 298