Postretirement Benefits (Details 2) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Defined Contribution Plan
Costs related to defined contribution plans	$ 178	$ 143
U.S. Plans
Defined Contribution Plan
Costs related to defined contribution plans	149	114
Non-U.S. Plans
Defined Contribution Plan
Costs related to defined contribution plans	$ 29	$ 29