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Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended		3 Months Ended					9 Months Ended
	Jul. 10, 2023	Mar. 31, 2025	Mar. 31, 2024	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Jun. 20, 2023
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	200,000,000						115,661		1,415,924	567,491
Direct Costs of Stock Issuance							$ 0.1		$ 0.6	$ 0.1
Preferred Stock, Par Value Per Share											$ 1.00
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation				$ (0.4)	$ (2.2)	$ (0.3)		$ (0.4)
Share-Based Payment Arrangement, Reclassification From Equity To Liability				3.6						0.1
Payments for Share-Based Compensation Arrangement Reclassification				2.2						0.3
Minimum [Member]
Class of Stock [Line Items]
Purchase Price Increase Per Share											18.00
Maximum [Member]
Class of Stock [Line Items]
Purchase Price Increase Per Share											$ 160.38
Common Class A [Member]
Class of Stock [Line Items]
Stock Issued During Period, Value, Gross							4.6		143.2	24.5
Stock Issued During Period, Value, Net							$ 4.5		$ 140.1	$ 23.8
Preferred Stock [Member]
Class of Stock [Line Items]
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation				0.0	0.0	0.0		0.0
Common Stock [Member] | Common Class A [Member]
Class of Stock [Line Items]
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation				0.0	0.0	0.0		0.0
Excess of Capital over Par Value [Member]
Class of Stock [Line Items]
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation		$ (0.3)	$ (0.1)	$ (0.4)	$ (2.2)	$ (0.3)		$ (0.4)

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