Acquisitions (Details) - USD ($) $ in Thousands				11 Months Ended	12 Months Ended
	Feb. 01, 2019	Aug. 01, 2018	Feb. 01, 2018	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Nov. 12, 2018
Business Acquisition [Line Items]
Goodwill				$ 2,373,907	$ 2,293,935	$ 2,373,907
Revenues				340,300		2,124,778	$ 2,195,690
Income before income taxes				5,100		(116,254)	99,371
Goodwill impairment					81,867	152,712
Acquisition incremental direct integration and regulatory costs				$ 24,200	$ 2,000	$ 24,200	$ 3,600
Red Giant Oil
Business Acquisition [Line Items]
Gross payments to acquire business		$ 54,200
Current assets		14,400
Properties, plants and equipment		21,300
Goodwill		10,800
Current liabilities		2,000
Intangible assets		$ 9,700
Business Combination Acquiree Sonneborn
Business Acquisition [Line Items]
Percent of capital stock purchased in acquisition								100.00%
Acquisition considerations			$ 701,600
Gross payments to acquire business			$ 662,700
Cash and cash equivalents	$ 38,900
Current assets	139,400
Properties, plants and equipment	168,200
Goodwill	282,300
Intangibles and other noncurrent assets	231,500
Current liabilities	47,900
Deferred income tax and other long-term liabilities	110,800
Intangibles value in acquisition	$ 214,600
Intangibles amortization period (in years)	12 years