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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Net income $ 391,171 $ 386,176
Other comprehensive income (loss), net of tax    
Change in fair value of derivatives, net of tax of $21,437 and $(9,857), respectively (71,768) 32,998
Derivative amounts reclassified to net income, net of tax of $(19,724) and $(12,361), respectively 66,032 41,387
Change in retirement and other postretirement benefit plan obligations, net of tax of $(905) and $(1,087), respectively 3,030 3,638
Other comprehensive income of unconsolidated affiliates, net of tax of $(1,907) and $(2,339), respectively 6,385 7,830
Total other comprehensive income, net of tax 3,679 85,853
Comprehensive income $ 394,850 $ 472,029