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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net income (loss)	$ (141,857)	$ 337,208
Other comprehensive income (loss), net of tax
Change in fair value of derivatives, net of tax of $31,705 and $20,593, respectively	(106,141)	(68,944)
Derivative amounts reclassified to net income (loss), net of tax of $4,518 and $4,177, respectively	(15,164)	(12,171)
Change in retirement and other postretirement benefit plan obligations, net of tax of $(1,064) and $(699), respectively	3,562	2,341
Other comprehensive income (loss) of unconsolidated affiliates, net of tax of $2,283 and $750, respectively	(7,643)	(2,511)
Total other comprehensive income (loss), net of tax	(125,386)	(81,285)
Comprehensive income (loss)	$ (267,243)	$ 255,923

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