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Other, Net | 12 Months Ended
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Dec. 31, 2021
Other Nonoperating Income (Expense) [Abstract] |
Other, Net | Other, Net
Year Ended December 31, (in millions) | 2021 |  | 2020 |  | 2019
Interest income | $ | 4.0 |  |  | $ | 5.5 |  |  | $ | 7.7 |
AFUDC equity | 13.1 |  |  | 9.9 |  |  | 8.0 |
Charitable contributions | (11.5) |  |  | (1.5) |  |  | (5.1) |
Pension and other postretirement non-service cost(1) | 35.5 |  |  | 9.3 |  |  | (16.5) |
Sale of emission reduction credits | — |  |  | 4.6 |  |  | — |
Miscellaneous | (0.3) |  |  | 4.3 |  |  | 0.7 |
Total Other, net | $ | 40.8 |  |  | $ | 32.1 |  |  | $ | (5.2) |
(1) See Note 12, "Pension and Other Postretirement Benefits" for additional information.

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- Definition The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -URI http://asc.fasb.org/topic&trid=2122503 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 610 -URI http://asc.fasb.org/topic&trid=49130413 + Details
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