SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Allowance for doubtful accounts
Valuation and qualifying accounts
Balance at Beginning of Period	$ 867	$ 822	$ 788
Charged to Costs and Expenses	37	56	37
Charged to Other Accounts	0	(11)	(3)
Deductions	0	0	0
Balance at End of Period	904	867	822
Valuation allowance and reserves, current	44	46	42
Environmental, litigation, tax and other reserves
Valuation and qualifying accounts
Balance at Beginning of Period	3,164	2,429	2,411
Charged to Costs and Expenses	714	900	115
Charged to Other Accounts	138	94	43
Deductions	(304)	(259)	(140)
Balance at End of Period	3,712	3,164	2,429
Environmental litigation tax and other reserves, current	$ 266	$ 790	$ 149