Employee Retirement Plans and Postretirement Benefits - Weighted Average Assumptions (Details)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension
Defined Benefit Plan Disclosure [Line Items]
Settlement discount rate	1.84%	2.55%	3.44%
Rate of compensation increase	2.00%	2.00%	2.00%
Expected return on plan assets	3.03%	3.24%	4.38%
Settlement discount rate	2.27%	1.84%
Rate of compensation increase	2.00%	2.00%
OPEB
Defined Benefit Plan Disclosure [Line Items]
Settlement discount rate	2.10%	2.91%	3.92%
Settlement discount rate	2.59%	2.10%
OPEB \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate	6.00%	6.25%	6.50%
OPEB \| Maximum \| Determining PBO
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate	6.00%	6.00%
OPEB \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate	3.57%	3.57%	4.50%
OPEB \| Minimum \| Determining PBO
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate	3.57%	3.57%

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

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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 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=123447040&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=123447040&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

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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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- Definition

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

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