Cash Flow Information (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Supplemental Cash Flow Elements [Abstract]
Interest paid	$ 369	$ 303
Income taxes paid	882	399
Treasury stock purchases settled after the balance sheet date	3	0
Distribution of nonmonetary assets (see Note 10)	0	111
Software obtained under financing arrangements	122	61
Right-of-use assets obtained in exchange for lease liabilities - operating leases	59	98
Right-of-use assets obtained in exchange for lease liabilities - finance leases	$ 93	$ 69