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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Net income $ 1,499,706 $ 612,809 $ 1,278,577
Other comprehensive income (loss), net of tax      
Change in fair value of derivatives, net of tax of $60,896, $49,292 and $44,149, respectively (203,868) (165,023) (147,803)
Derivative amounts reclassified to net income, net of tax of $(69,134), $(6,313) and $6,058, respectively 228,999 21,097 (21,057)
Change in retirement and other postretirement benefit plan obligations, net of tax of $(14,929), $7,812 and $2,910, respectively 49,976 (26,154) (9,696)
Other comprehensive income (loss) of unconsolidated affiliates, net of tax of $(1,490), $2,201 and $2,152, respectively 4,991 (7,369) (7,205)
Total other comprehensive income (loss), net of tax 80,098 (177,449) (185,761)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total $ 1,579,804 $ 435,360 $ 1,092,816