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Supplemental Financial Information (Narrative) (Details) $ in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 AUD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Supplemental Financial Information [Abstract]
Deposit Liabilities, Collateral Issued, Financial Instruments		$ 10.8		$ 12.6
Interest Costs Capitalized		15.9		$ 5.6	$ 1.2
Proceeds from Income Tax Refunds	$ 45.9	$ 35.9	$ 38

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- Definition

Amount of securities, mortgage loans, or other financial instruments pledged as collateral for deposits.

+ References

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- Definition

Amount of interest capitalized during the period.

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Amount of income tax refund received from tax jurisdiction.

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