Postretirement benefits Schedule of amounts recognized in AOCI on a pretax basis (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Pension Plan [Member] | UNITED STATES
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial loss (gain)	$ (290)	$ (375)
Prior Service Cost (benefit)	0	0
Total	(290)	(375)
Pension Plan [Member] | Non - U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial loss (gain)	7	73
Prior Service Cost (benefit)	8	9
Total	15	82
Other Postretirement Benefits Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial loss (gain)	(12)	(10)
Prior Service Cost (benefit)	(4)	(5)
Total	$ (16)	$ (15)