Cash and Available-for-Sale Securities - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash and Cash Equivalents [Abstract]
Interest income from available-for-sale securities	$ 85.8	$ 106.3	$ 65.1

Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
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