Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2022

Fair Value Disclosures [Abstract]

Schedule of assets and liabilities measured at estimated fair value on a recurring basis

The following tables present information about our gross assets and liabilities that are measured at fair value on a recurring basis (in millions):

	Fair Value Measurements as of December 31, 2022
		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
Assets:
Commodities contracts		$	496.2	$	797.6	$	4.2	$	1,298.0
Interest rate contract		—		24.7		—		24.7
Foreign currency contracts		—		24.7		—		24.7
Cash surrender value of life insurance		—		14.4		—		14.4
Total assets at fair value		$	496.2	$	861.4	$	4.2	$	1,361.8
Liabilities:
Commodities contracts		$	497.4	$	951.2	$	3.4	$	1,452.1
Foreign currency contracts		—		38.7		—		38.7
Total liabilities at fair value		$	497.4	$	989.9	$	3.4	$	1,490.8

	Fair Value Measurements as of December 31, 2021
		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
Assets:
Commodities contracts		$	513.3	$	247.6	$	2.6	$	763.5
Interest rate contract		—		5.4		—		5.4
Foreign currency contracts		—		4.7		—		4.7
Cash surrender value of life insurance		—		14.6		—		14.6
Total assets at fair value		$	513.3	$	272.3	$	2.6	$	788.3
Liabilities:
Commodities contracts		$	361.5	$	378.6	$	3.8	$	743.9
Interest rate contract		—		0.3		—		0.3
Foreign currency contracts		—		4.3		—		4.3
Total liabilities at fair value		$	361.5	$	383.2	$	3.8	$	748.5

Schedule of commodity derivative assets subject to the right of offset

The following tables summarize those derivative balances subject to the right of offset as presented on our Consolidated Balance Sheets (in millions):

	Fair Value as of December 31, 2022
	Gross Amounts Recognized		Gross Amounts Offset		Net Amounts Presented		Cash Collateral		Gross Amounts Without Right of Offset		Net Amounts
Assets:
Commodities contracts	$	1,298.0	$	756.8	$	541.1	$	79.3	$	—	$	461.9
Interest rate contract	24.7		—		24.7		—		—		24.7
Foreign currency contracts	24.7		20.9		3.8		—		—		3.8
Total assets at fair value	$	1,347.4	$	777.7	$	569.7	$	79.3	$	—	$	490.5
Liabilities:
Commodities contracts	$	1,452.1	$	755.6	$	696.4	$	243.1	$	—	$	453.3
Foreign currency contracts	38.7		22.1		16.7		—		—		16.7
Total liabilities at fair value	$	1,490.8	$	777.7	$	713.1	$	243.1	$	—	$	470.0

	Fair Value as of December 31, 2021
	Gross Amounts Recognized		Gross Amounts Offset		Net Amounts Presented		Cash Collateral		Gross Amounts Without Right of Offset		Net Amounts
Assets:
Commodities contracts	$	763.5	$	513.1	$	250.4	$	7.6	$	—	$	242.8
Interest rate contract	5.4		—		5.4		—		—		5.4
Foreign currency contracts	4.7		2.6		2.1		—		—		2.1
Total assets at fair value	$	773.6	$	515.6	$	258.0	$	7.6	$	—	$	250.4
Liabilities:
Commodities contracts	$	743.9	$	513.1	$	230.8	$	3.2	$	—	$	227.7
Interest rate contract	0.3		—		0.3		—		—		0.3
Foreign currency contracts	4.3		2.6		1.7		—		—		1.7
Total liabilities at fair value	$	748.5	$	515.6	$	232.8	$	3.2	$	—	$	229.7

Schedule of commodity derivative liabilities subject to the right of offset

The following tables summarize those derivative balances subject to the right of offset as presented on our Consolidated Balance Sheets (in millions):

	Fair Value as of December 31, 2022
	Gross Amounts Recognized		Gross Amounts Offset		Net Amounts Presented		Cash Collateral		Gross Amounts Without Right of Offset		Net Amounts
Assets:
Commodities contracts	$	1,298.0	$	756.8	$	541.1	$	79.3	$	—	$	461.9
Interest rate contract	24.7		—		24.7		—		—		24.7
Foreign currency contracts	24.7		20.9		3.8		—		—		3.8
Total assets at fair value	$	1,347.4	$	777.7	$	569.7	$	79.3	$	—	$	490.5
Liabilities:
Commodities contracts	$	1,452.1	$	755.6	$	696.4	$	243.1	$	—	$	453.3
Foreign currency contracts	38.7		22.1		16.7		—		—		16.7
Total liabilities at fair value	$	1,490.8	$	777.7	$	713.1	$	243.1	$	—	$	470.0

	Fair Value as of December 31, 2021
	Gross Amounts Recognized		Gross Amounts Offset		Net Amounts Presented		Cash Collateral		Gross Amounts Without Right of Offset		Net Amounts
Assets:
Commodities contracts	$	763.5	$	513.1	$	250.4	$	7.6	$	—	$	242.8
Interest rate contract	5.4		—		5.4		—		—		5.4
Foreign currency contracts	4.7		2.6		2.1		—		—		2.1
Total assets at fair value	$	773.6	$	515.6	$	258.0	$	7.6	$	—	$	250.4
Liabilities:
Commodities contracts	$	743.9	$	513.1	$	230.8	$	3.2	$	—	$	227.7
Interest rate contract	0.3		—		0.3		—		—		0.3
Foreign currency contracts	4.3		2.6		1.7		—		—		1.7
Total liabilities at fair value	$	748.5	$	515.6	$	232.8	$	3.2	$	—	$	229.7