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v3.20.4

Employee Postretirement Benefits (Weighted-Average Assumptions) (Details) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Defined Benefit Pension Plans |  |  |  |
Net cost, Discount rate |  | 2.44% | 3.40% | 3.23%
Expected long-term return on plan assets |  | 3.66% | 4.39% | 4.50%
Net cost, Rate of compensation increase |  | 3.08% | 3.08% | 2.27%
Benefit obligations, Discount rate |  | 1.93% | 2.51% |
Benefit obligations, Rate of compensation increase |  | 3.07% | 3.08% |
Defined Benefit Pension Plans | Scenario, Forecast |  |  |  |
Net cost, Discount rate | 1.93% |  |  |
Expected long-term return on plan assets | 3.41% |  |  |
Net cost, Rate of compensation increase | 3.07% |  |  |
Other Postretirement Benefit Plans |  |  |  |
Net cost, Discount rate |  | 3.51% | 4.50% | 3.91%
Expected long-term return on plan assets |  | 0.00% | 0.00% | 0.00%
Net cost, Rate of compensation increase |  | 0.00% | 0.00% | 0.00%
Benefit obligations, Discount rate |  | 2.69% | 3.51% |
Benefit obligations, Rate of compensation increase |  | 0.00% | 0.00% |

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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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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