Pension, Other Postretirement Benefits and Savings Plans - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Prescription drug subsidy (less than)	$ 1
Weighted average discount rate	2.10%	1.70%
Defined contribution plans, contribution expenses	$ 116	$ 100	$ 110
Private Equity and Private Credit Securities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	5.00%
Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	91.00%
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	3.00%
Real Estate Funds
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	1.00%
Maximum
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to funded non-U.S. pension plans in next year	$ 50
Minimum
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to funded non-U.S. pension plans in next year	25
United States
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	5,780	5,220
Non-U.S.
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 3,385	3,284
Non-U.S. | Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	95.00%
Non-U.S. | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	5.00%
Non-U.S. | Unfunded Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 226	264
Pension benefit obligation	253	299
AOCL adjustment	57	90
Pension Plan [Member] | United States
Defined Benefit Plan Disclosure [Line Items]
Settlement charges		28
Curtailment credit (charge) and special termination benefits			5
Settlement payments	90	56
Service cost	9	4	3
Increase (decrease) for plan amendment	0	0
Benefits cost	55	77	$ 73
Postretirement benefits funded status	$ (78)	$ (265)
Weighted average discount rate	1.72%	2.66%	3.85%
Assumed weighted average long term rate of return	3.74%	4.22%	5.25%
Pension benefit obligation	$ 5,798	$ 5,235	$ 5,009
AOCL adjustment	2,157	2,350
Pension Plan [Member] | United States | Other (Income) Expense
Defined Benefit Plan Disclosure [Line Items]
Settlement charges	43	24	6
Pension Plan [Member] | United States | Rationalizations
Defined Benefit Plan Disclosure [Line Items]
Settlement charges		4
Pension Plan [Member] | Non-U.S.
Defined Benefit Plan Disclosure [Line Items]
Settlement payments	10	8
Service cost	30	30	26
Increase (decrease) for plan amendment	3	3
Benefits cost	65	67	$ 70
Postretirement benefits funded status	$ (192)	$ (341)
Weighted average discount rate	1.82%	2.26%	2.84%
Assumed weighted average long term rate of return	2.27%	2.52%	2.95%
Pension benefit obligation	$ 3,464	$ 3,382	$ 3,195
AOCL adjustment	491	661
Pension Plan [Member] | Non-U.S. | Other (Income) Expense
Defined Benefit Plan Disclosure [Line Items]
Curtailment credit (charge)		6
Pension Plan [Member] | United Kingdom
Defined Benefit Plan Disclosure [Line Items]
Service cost	21
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Settlement payments	0	0
Service cost	3	2	2
Increase (decrease) for plan amendment	(4)	0
Benefits cost	9	1	7
Postretirement benefits funded status	(406)	(236)
Pension benefit obligation	406	236	241
AOCL adjustment	2	23
Other Postretirement Benefits Plan [Member] | United States
Defined Benefit Plan Disclosure [Line Items]
Curtailment credit (charge)		4
Termination benefit charge		5
Benefits cost	5	1	$ 3
Postretirement benefits funded status	$ (292)	$ (106)
Weighted average discount rate	1.97%	2.68%	3.79%
Other Postretirement Benefits Plan [Member] | Non-U.S.
Defined Benefit Plan Disclosure [Line Items]
Benefits cost	$ 4	$ 0	$ 4
Postretirement benefits funded status	$ (114)	$ (130)
Weighted average discount rate	6.54%	5.68%	6.25%