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Components of Accumulated Other Comprehensive Income (Loss) | 12 Months Ended
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Dec. 31, 2022
Equity [Abstract] |
Components of Accumulated Other Comprehensive Loss | NOTE 16. COMPONENTS OF A CCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) The following tables detail the changes in our Accumulated Other Comprehensive Income (Loss) (AOCI) on our Consolidated Balance Sheets for the years ended December 31, 2022 and 2021, net of tax.
(in thousands) |  | 2022 |  |  | 2021 |
Pension Plans |  |  |  |  |  |
Balance at beginning of period |  | $ | (49,579 | ) |  | $ | (79,025 | )
Net gain arising during the period |  |  | 1,857 |  |  |  | 19,147 |
Effect of pension settlement |  |  | 10,553 |  |  |  | — |
Amounts reclassified from AOCI to earnings |  |  | 4,077 |  |  |  | 10,299 |
Balance at end of period |  |  | (33,092 | ) |  |  | (49,579 | )
Other Postretirement Benefit Plans |  |  |  |  |  |
Balance at beginning of period |  |  | (1,790 | ) |  |  | (14,783 | )
Net gain arising during the period |  |  | 6,208 |  |  |  | 12,378 |
Amounts reclassified from AOCI to earnings |  |  | 180 |  |  |  | 615 |
Balance at end of period |  |  | 4,598 |  |  |  | (1,790 | )
Cash Flow Hedges |  |  |  |  |  |
Balance at beginning of period |  |  | 8,131 |  |  |  | (27,181 | )
Net gain arising during the period |  |  | 116,774 |  |  |  | 26,206 |
Amounts reclassified from AOCI to earnings |  |  | 1,241 |  |  |  | 9,106 |
Balance at end of period |  |  | 126,146 |  |  |  | 8,131 |
Accumulated other comprehensive income (loss), end of period |  | $ | 97,652 |  |  | $ | (43,238 | )
See Note 10: Derivative Instruments and Note 15: Savings Plans, Pension and Other Postretirement Employee Benefits for additional information.

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI https://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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