Pensions and Postretirement Benefits Other Than Pensions (Schedule of Pretax Amounts Recognized in Accumulated Other Comprehensive Income or (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current year changes recorded to Accumulated other comprehensive income (loss)	$ (0.1)	$ 16.8	$ 54.2
Amortization reclassified to earnings	(5.4)	(7.4)	(21.6)
Stockholders' Equity Note, Spinoff Transaction			(18.9)
Pension Plans [Member]
Balance at December 31, 2013	(503.8)
Current year changes recorded to Accumulated other comprehensive income (loss)	3.2
Amortization reclassified to earnings	18.0
Settlements/curtailments reclassified to earnings	1.0	1.4	$ 15.0
Currency translation and other	2.1
Balance at December 31, 2014	(479.5)	(503.8)
Pension Plans [Member] \| Net Actuarial Losses [Member]
Balance at December 31, 2013	(485.8)
Current year changes recorded to Accumulated other comprehensive income (loss)	3.2
Amortization reclassified to earnings	15.0
Settlements/curtailments reclassified to earnings	(1.0)
Currency translation and other	1.9
Balance at December 31, 2014	(464.7)	(485.8)
Pension Plans [Member] \| Prior Service Cost [Member]
Balance at December 31, 2013	(18.0)
Current year changes recorded to Accumulated other comprehensive income (loss)	0.0
Amortization reclassified to earnings	3.0
Settlements/curtailments reclassified to earnings	0.0
Currency translation and other	0.2
Balance at December 31, 2014	$ (14.8)	$ (18.0)

Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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