Fair Value Measurements - Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	$ 385.4	$ 291.3
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	358.6	228.4
Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	406.8	311.4
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	358.6	228.4
Fair value measured on recurring basis \| Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	232.4	113.4
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	235.6	118.5
Fair value measured on recurring basis \| Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	167.5	187.3
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	121.4	106.1
Fair value measured on recurring basis \| Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	6.8	10.7
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	1.6	3.8
Commodity Contract [Member] \| Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	368.8	283.7
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	339.1	218.6
Commodity Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	232.4	113.4
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	235.6	118.5
Commodity Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	129.5	159.6
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	101.9	96.4
Commodity Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	6.8	10.7
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	1.6	3.8
Foreign Exchange Contract [Member] \| Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	16.6	7.6
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	19.5	9.8
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]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	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	16.6	7.6
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	19.5	9.8
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]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	0.0	0.0
Cash Surrender Value [Member] \| Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Investments, Fair Value Disclosure	21.4	20.1
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	21.4	20.1
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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