Pension Plans and Other Post Employment Benefit Plans Components of net periodic benefit cost (credit) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	$ 5	$ 7	$ 14	$ 19
Interest Cost	126	91	343	273
Expected return on plan assets	(180)	(228)	(560)	(686)
Amortization of unrecognized loss (gain)	0	14	2	41
Amortization of Prior Service Benefit	0	0	(2)	(1)
Settlement Loss (Gain)	25	0	27	1
Defined Benefit Plan, Net Periodic Benefit (Credit) Cost	(24)	(116)	(176)	(353)
Other Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	0	1	1	1
Interest Cost	6	5	19	16
Amortization of unrecognized loss (gain)	1	23	2	70
Amortization of Prior Service Benefit	0	(231)	(1)	(692)
Curtailment (gain) loss	0	0	0	(1)
Defined Benefit Plan, Net Periodic Benefit (Credit) Cost	$ 7	$ (202)	$ 21	$ (606)