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Pension and Other Postretirement Benefits (Schedule of Defined Benefit Plan Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	$ 218	$ 360	$ 464
Level 3 | Investment funds – real estate
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	0	2	43
Level 3 | Private equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	7	51	75
Level 3 | Real estate – direct
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	211	307	346
Fair Value Measured at Net Asset Value Per Share | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	137	137
Fair Value Measured at Net Asset Value Per Share | Investment funds – global equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	167	141
Fair Value Measured at Net Asset Value Per Share | Investment funds – real estate
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		109
Fair Value Measured at Net Asset Value Per Share | Investment funds – emerging markets
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	7	7
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets excluding accrued income	1,705	4,659
Pension Plan | Total assets in fair value hierarchy
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	1,394	4,265
Pension Plan | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	947	1,388
Pension Plan | Level 1 | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	89	655
Pension Plan | Level 1 | Global large cap equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	8	9
Pension Plan | Level 1 | U.S. large cap equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	244	182
Pension Plan | Level 1 | U.S. mid/small cap equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	357	323
Pension Plan | Level 1 | Mutual funds – global equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	93	88
Pension Plan | Level 1 | Mutual funds – U.S. equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	85	56
Pension Plan | Level 1 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	71	75
Pension Plan | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	229	2,517
Pension Plan | Level 2 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	38	128
Pension Plan | Level 2 | Government issued debt securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	17	298
Pension Plan | Level 2 | Corporate debt securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	64	705
Pension Plan | Level 2 | Asset backed securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		2
Pension Plan | Level 2 | Structured debt
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		1,034
Pension Plan | Level 2 | Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	110	115
Pension Plan | Level 2 | Derivatives
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		166
Pension Plan | Level 2 | Investment funds – global equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		69
Pension Plan | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	218	360
Pension Plan | Level 3 | Investment funds – real estate
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		272
Pension Plan | Level 3 | Investment funds – real estate
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	171	2
Pension Plan | Level 3 | Private equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	7	51
Pension Plan | Level 3 | Real estate – direct
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	40	35
Pension Plan | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	311	394
Pension Plan | Fair Value Measured at Net Asset Value Per Share | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	137	137
Pension Plan | Fair Value Measured at Net Asset Value Per Share | Investment funds – global equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	167	141
Pension Plan | Fair Value Measured at Net Asset Value Per Share | Investment funds – real estate
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		109
Pension Plan | Fair Value Measured at Net Asset Value Per Share | Investment funds – emerging markets
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	7	7
Pension Plan | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	1,177	1,152	1,131
Defined benefit plan fair value of plan assets excluding accrued income	1,176	1,151
Accrued income	1	1
Pension Plan | U.S. Plans | Total assets in fair value hierarchy
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	1,057	1,032
Pension Plan | U.S. Plans | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	887	855
Pension Plan | U.S. Plans | Level 1 | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	68	157
Pension Plan | U.S. Plans | Level 1 | Global large cap equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	0	0
Pension Plan | U.S. Plans | Level 1 | U.S. large cap equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	238	178
Pension Plan | U.S. Plans | Level 1 | U.S. mid/small cap equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	332	301
Pension Plan | U.S. Plans | Level 1 | Mutual funds – global equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	93	88
Pension Plan | U.S. Plans | Level 1 | Mutual funds – U.S. equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	85	56
Pension Plan | U.S. Plans | Level 1 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	71	75
Pension Plan | U.S. Plans | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	61	58
Pension Plan | U.S. Plans | Level 2 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	0	0
Pension Plan | U.S. Plans | Level 2 | Government issued debt securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	0	0
Pension Plan | U.S. Plans | Level 2 | Corporate debt securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	61	58
Pension Plan | U.S. Plans | Level 2 | Asset backed securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		0
Pension Plan | U.S. Plans | Level 2 | Structured debt
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		0
Pension Plan | U.S. Plans | Level 2 | Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	0	0
Pension Plan | U.S. Plans | Level 2 | Derivatives
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		0
Pension Plan | U.S. Plans | Level 2 | Investment funds – global equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		0
Pension Plan | U.S. Plans | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	109	119
Pension Plan | U.S. Plans | Level 3 | Investment funds – real estate
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		91
Pension Plan | U.S. Plans | Level 3 | Investment funds – real estate
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	79	0
Pension Plan | U.S. Plans | Level 3 | Private equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	5	5
Pension Plan | U.S. Plans | Level 3 | Real estate – direct
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	25	23
Pension Plan | U.S. Plans | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	119	119
Pension Plan | U.S. Plans | Fair Value Measured at Net Asset Value Per Share | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	112	112
Pension Plan | U.S. Plans | Fair Value Measured at Net Asset Value Per Share | Investment funds – global equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	0	0
Pension Plan | U.S. Plans | Fair Value Measured at Net Asset Value Per Share | Investment funds – real estate
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		0
Pension Plan | U.S. Plans | Fair Value Measured at Net Asset Value Per Share | Investment funds – emerging markets
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	7	7
Pension Plan | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	529	3,518	$ 3,480
Defined benefit plan fair value of plan assets excluding accrued income	529	3,508
Accrued income	0	10
Pension Plan | Non-U.S. Plans | Total assets in fair value hierarchy
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	337	3,233
Pension Plan | Non-U.S. Plans | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	60	533
Pension Plan | Non-U.S. Plans | Level 1 | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	21	498
Pension Plan | Non-U.S. Plans | Level 1 | Global large cap equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	8	9
Pension Plan | Non-U.S. Plans | Level 1 | U.S. large cap equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	6	4
Pension Plan | Non-U.S. Plans | Level 1 | U.S. mid/small cap equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	25	22
Pension Plan | Non-U.S. Plans | Level 1 | Mutual funds – global equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	0	0
Pension Plan | Non-U.S. Plans | Level 1 | Mutual funds – U.S. equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	0	0
Pension Plan | Non-U.S. Plans | Level 1 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	0	0
Pension Plan | Non-U.S. Plans | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	168	2,459
Pension Plan | Non-U.S. Plans | Level 2 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	38	128
Pension Plan | Non-U.S. Plans | Level 2 | Government issued debt securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	17	298
Pension Plan | Non-U.S. Plans | Level 2 | Corporate debt securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	3	647
Pension Plan | Non-U.S. Plans | Level 2 | Asset backed securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		2
Pension Plan | Non-U.S. Plans | Level 2 | Structured debt
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		1,034
Pension Plan | Non-U.S. Plans | Level 2 | Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	110	115
Pension Plan | Non-U.S. Plans | Level 2 | Derivatives
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		166
Pension Plan | Non-U.S. Plans | Level 2 | Investment funds – global equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		69
Pension Plan | Non-U.S. Plans | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	109	241
Pension Plan | Non-U.S. Plans | Level 3 | Investment funds – real estate
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		181
Pension Plan | Non-U.S. Plans | Level 3 | Investment funds – real estate
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	92	2
Pension Plan | Non-U.S. Plans | Level 3 | Private equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	2	46
Pension Plan | Non-U.S. Plans | Level 3 | Real estate – direct
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	15	12
Pension Plan | Non-U.S. Plans | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	192	275
Pension Plan | Non-U.S. Plans | Fair Value Measured at Net Asset Value Per Share | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	25	25
Pension Plan | Non-U.S. Plans | Fair Value Measured at Net Asset Value Per Share | Investment funds – global equity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	167	141
Pension Plan | Non-U.S. Plans | Fair Value Measured at Net Asset Value Per Share | Investment funds – real estate
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value		109
Pension Plan | Non-U.S. Plans | Fair Value Measured at Net Asset Value Per Share | Investment funds – emerging markets
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan assets at fair value	$ 0	$ 0

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