Leases Lease Other Supplemental Information (Details 3) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Lease Other Supplemental Information (Details 3) [Abstract]
Cash paid for amounts included in the measurement of operating lease liabilities	$ 306	$ 275
Right-of-use assets obtained in exchange for new lease liabilities	$ 394	$ 345
Operating Lease, Weighted Average Remaining Lease Term	11 years 3 months 18 days	12 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent	3.10%	3.50%