Income taxes (Details 3) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components of profit (loss) before taxes
U.S	$ 2,888	$ 2,131	$ 240
Non-U.S	4,924	5,691	3,842
Consolidated profit before taxes	7,812	7,822	4,082
Current tax provision (benefit):
U.S.	405	179	963
Non-U.S.	1,261	1,291	1,124
State (U.S.)	52	8	39
Current tax provision (benefit)	1,718	1,478	2,126
Deferred tax provision (benefit):
U.S.	17	298	1,385
Non-U.S.	(7)	4	(17)
State (U.S.)	18	(82)	(155)
Deferred tax provision (benefit)	28	220	1,213
Provision (benefit) for income taxes	1,746	1,698	3,339
Income Taxes Paid	$ 1,847	$ 1,429	$ 1,404