Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 23,345	$ 297,980	$ (420,348)	$ 791,283
Other comprehensive income (loss)
Foreign currency translation adjustment	7,727	(9,311)	(2,149)	4,212
Change in fair value of cash flow hedging instruments	(2,094)	(1,989)	(7,329)	12,909
Reclassification adjustments to net income (loss) on settlement of cash flow hedging instruments	4,586	(5,573)	3,411	(12,537)
Net unrealized gain (loss) on hedging instruments	2,492	(7,562)	(3,918)	372
Actuarial loss on pension plans	0	0	(45)	0
Actuarial gain on post-retirement healthcare plans	0	0	3	0
Net change in pension and other post-retirement benefit obligations	0	0	(42)	0
Other comprehensive income (loss) before income taxes	10,219	(16,873)	(6,109)	4,584
Income tax expense (benefit)	2,342	(3,888)	(1,437)	990
Other comprehensive (income) loss	7,877	(12,985)	(4,672)	3,594
Total comprehensive income (loss)	31,222	284,995	(425,020)	794,877
Less noncontrolling interest in comprehensive income	25,746	36,167	63,353	79,500
Comprehensive income (loss) attributable to HollyFrontier stockholders	$ 5,476	$ 248,828	$ (488,373)	$ 715,377