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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Net income $ 1,722,221 $ 1,499,706 $ 612,809
Other comprehensive income (loss), net of tax      
Change in fair value of derivatives, net of tax of $(27,914), $60,896 and $49,292, respectively 93,451 (203,868) (165,023)
Derivative amounts reclassified to net income, net of tax of $(60,019), $(69,134) and $(6,313), respectively 200,933 228,999 21,097
Change in retirement and other postretirement benefit plan obligations, net of tax of $(15,761), $(14,929), and $7,812, respectively 52,764 49,976 (26,154)
Other comprehensive income (loss) of unconsolidated affiliates, net of tax of $(4,764), $(1,490) and $2,201, respectively 15,947 4,991 (7,369)
Total other comprehensive income (loss), net of tax 363,095 80,098 (177,449)
Comprehensive income $ 2,085,316 $ 1,579,804 $ 435,360