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Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions				3 Months Ended
	Mar. 03, 2025	Feb. 27, 2025	Feb. 22, 2024	Mar. 31, 2025	Mar. 31, 2024	Mar. 15, 2024
Preferred Stock, Par or Stated Value Per Share						$ 25,000
Preferred Stock Shares Redeemed					0
Forward Contract Indexed to Issuer's Equity, Forward Rate Per Share	$ 41.00	$ 40.10		$ 40.80
Preferred Stock Redemption Premium				$ 0.0	$ 14.0
Forward February 22
Forward Contract Indexed to Issuer's Equity, Forward Rate Per Share				$ 39.92
Pension Plan
Defined Benefit Plan, Plan Assets, Contributions by Employer				$ 0.5	0.7
Other Postretirement Benefit Plan
Defined Benefit Plan, Plan Assets, Contributions by Employer				4.9	$ 5.4
At The Market Program
Common Stock Aggregate Sale Price			$ 900.0
ATM Program Equity Remaining Available for Issuance				147.5
Forward February 22
Common Stock Aggregate Sale Price		$ 79.8
Forward Contract Indexed to Issuer's Equity, Shares		2,000,000
Forward March 03
Common Stock Aggregate Sale Price				$ 69.7
Forward Contract Indexed to Issuer's Equity, Shares	1,707,320
Series B Preferred Stock [Member]
Preferred Stock, Dividends Per Share, Declared				$ 0	$ 406.25
Series B-1 Preferred Stock
Preferred Stock, Par or Stated Value Per Share						$ 0.01
Preferred Stock, Redemption Amount						$ 500.0
Preferred Stock, Shares Issued						20,000

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