Commitments Contingencies and Guarantees (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Maximum Capital Lease Obligations As Offset Against Industrial Bonds	$ 150
Liability For Expected Credit Losses Included in Other Liabilities	1	$ 2
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	1,400	$ 1,900
Other Notes Payable	500
Other Notes Payable Funding Agreement Backed Notes	$ 400