Pensions and Postretirement Benefits - Summary of Assumptions Used in the Valuation of Pension and Postretirement Benefit Obligations (Details)	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension Benefits
Assumptions used to determine benefit obligation at year-end
Discount rate	5.48%	2.80%	2.40%
Rate of compensation increase	3.00%	3.00%	3.00%
Assumptions used to determine expense
Discount rate for benefit obligations	2.80%	2.40%	3.22%
Discount rate for service costs	2.85%	2.47%	3.25%
Discount rate for interest costs	2.21%	1.66%	2.76%
Expected return on plan assets	7.75%	7.75%	7.75%
Rate of compensation increase	3.00%	3.00%	3.00%
Postretirement Benefits
Assumptions used to determine benefit obligation at year-end
Discount rate	5.41%	2.49%	1.95%
Health care cost trend rate	7.00%	6.25%	6.25%
Ultimate health care cost trend rate	5.00%	5.00%	5.00%
Assumptions used to determine expense
Discount rate for benefit obligations	2.51%	2.04%	2.95%
Discount rate for service costs	2.88%	2.44%	3.29%
Discount rate for interest costs	1.96%	1.33%	2.56%
Expected return on plan assets	7.75%	7.75%
Medical health care benefits rate increase	7.00%	6.25%	6.25%
Medical drug benefits rate increase	7.00%	6.25%	6.25%
Ultimate health care cost trend rate	5.00%	5.00%	5.00%

Defined Benefit Plan, Assumptions Used Calculating Interest Cost, Discount Rate

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Defined Benefit Plan, Assumptions Used Calculating Service Cost, Discount Rate

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- Definition

Defined benefit plan health care cost annual rate of increase in drug benefits percentage

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Defined benefit plan health care cost annual rate of increase in medical health care benefits percentage.

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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.

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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.

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

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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 https://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 https://asc.fasb.org/extlink&oid=123447040&loc=d3e2919-114920

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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.

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

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