Fair Value Measurements - Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	$ 632.2	$ 840.7
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	544.9	697.8
Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	651.5	857.3
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	544.9	697.8
Fair value measured on recurring basis \| Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	235.8	220.0
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	294.3	322.1
Fair value measured on recurring basis \| Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	405.6	625.6
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	249.7	373.9
Fair value measured on recurring basis \| Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	10.1	11.6
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	0.9	1.8
Commodity Contract [Member] \| Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	611.6	791.8
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	519.6	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	235.8	220.0
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	294.3	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	365.7	560.2
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	224.4	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	10.1	11.6
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	0.9	1.8
Interest Rate Contract [Member] \| Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	5.8	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	5.8	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	14.8	34.1
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	25.3	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	14.8	34.1
Liabilities, Fair Value Disclosure [Abstract]
Gross derivative liabilities	25.3	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	19.3	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	19.3	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 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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