Pension and Other Postretirement Benefit Plans (Weighted-Average Assumptions Used to Determine Benefit Obligation at End of Year and Net Periodic Cost) (Details)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Health care cost trend rate
Initial rate	6.25%	6.50%	6.50%
Ultimate rate	5.00%	5.00%	5.00%
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plan [Line Items]
Discount rate	2.98%	3.45%
Discount rate used calculating net periodic benefit cost	3.35%	4.80%	4.35%
United States Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plan [Line Items]
Rate of compensation increase	4.50%	4.50%
Interest crediting rate for cash balance plans	1.25%	2.05%
Rate of compensation increase	4.50%	4.50%	4.50%
Interest crediting rate for cash balance plans	2.05%	3.05%	2.40%
United States Pension Benefits \| Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plan [Line Items]
Discount rate	2.50%	3.30%
Discount rate used calculating net periodic benefit cost	3.13%	4.30%	3.65%
Expected long-term rate of return on plan assets	6.25%	6.50%	6.75%
Foreign Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plan [Line Items]
Rate of compensation increase	3.47%	3.10%
Interest crediting rate for cash balance plans	1.99%	1.80%
Rate of compensation increase	3.10%	3.29%	3.20%
Interest crediting rate for cash balance plans	1.80%	2.19%	2.16%
Foreign Pension Benefits \| Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plan [Line Items]
Discount rate	1.55%	2.04%
Discount rate used calculating net periodic benefit cost	2.04%	2.90%	2.57%
Expected long-term rate of return on plan assets	5.39%	5.56%	5.81%

No definition available.

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- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

+ References

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- Definition

Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

+ References

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- Definition

Weighted-average interest crediting rate used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, cash balance and other defined benefit plans with promised interest crediting rate.

+ References

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- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.

+ References

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- Definition

Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(3)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2919-114920

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- Definition

Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

+ References

+ Details

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- Definition

Weighted-average interest crediting rate used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, cash balance and other defined benefit plans with promised interest crediting rate.

+ References

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- Definition

Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status.

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- Definition

Ultimate trend rate for health care cost for defined benefit postretirement plan.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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