Fair Value Measurements - Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	$ 631.4	$ 840.7
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	551.4	697.8
Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	649.8	857.3
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	551.4	697.8
Fair value measured on recurring basis \| Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	190.4	220.0
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	253.3	322.1
Fair value measured on recurring basis \| Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	451.0	625.6
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	297.3	373.9
Fair value measured on recurring basis \| Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	8.4	11.6
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	0.8	1.8
Commodity Contract [Member] \| Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	605.7	791.8
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	532.7	669.1
Commodity Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	190.4	220.0
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	253.3	322.1
Commodity Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	406.9	560.2
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	278.6	345.3
Commodity Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	8.4	11.6
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	0.8	1.8
Interest Rate Contract [Member] \| Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	10.5	14.8
Interest Rate Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	0.0	0.0
Interest Rate Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	10.5	14.8
Interest Rate Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	0.0	0.0
Foreign Exchange Contract [Member] \| Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	15.3	34.1
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	18.6	28.7
Foreign Exchange Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	0.0	0.0
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	0.0	0.0
Foreign Exchange Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	15.3	34.1
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	18.6	28.7
Foreign Exchange Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	0.0	0.0
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	0.0	0.0
Cash Surrender Value [Member] \| Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Investments, Fair Value Disclosure	18.4	16.5
Cash Surrender Value [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Investments, Fair Value Disclosure	0.0	0.0
Cash Surrender Value [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Investments, Fair Value Disclosure	18.4	16.5
Cash Surrender Value [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Investments, Fair Value Disclosure	$ 0.0	$ 0.0

Fair value portion of asset recognized for present right to economic benefit.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Fair value of financial and nonfinancial obligations.

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