CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Common Stock in Treasury
Total stockholders' equity, Beginning of Period at Dec. 31, 2020	$ 921.5	$ 0.9	$ 837.9	$ 750.3	$ (208.4)	$ (459.2)
Shares oustanding, Beginning of Period (in shares) at Dec. 31, 2020		68.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	40.1			40.1
Other Comprehensive Income (Loss) – net of tax	(7.1)				(7.1)
Issuance of Common Stock related to compensation (in shares)		0.5
Issuance of Common Stock related to compensation	11.4		11.4
Compensation under Stock-based Plans - net (in shares)		0.1
Compensation under Stock-based Plans - net	(11.0)		(13.8)			2.8
Dividends	(8.3)		0.2	(8.5)
Acquisition of Treasury Stock	(0.3)					(0.3)
Other	(0.2)			(0.2)
Shares outstanding, End of Period (in shares) at Mar. 31, 2021		69.2
Total stockholders' equity, End of Period at Mar. 31, 2021	946.1	$ 0.9	835.7	781.7	(215.5)	(456.7)
Total stockholders' equity, Beginning of Period at Dec. 31, 2020	921.5	$ 0.9	837.9	750.3	(208.4)	(459.2)
Shares oustanding, Beginning of Period (in shares) at Dec. 31, 2020		68.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	162.1
Shares outstanding, End of Period (in shares) at Sep. 30, 2021		69.2
Total stockholders' equity, End of Period at Sep. 30, 2021	1,050.7	$ 0.9	850.8	886.6	(229.3)	(458.3)
Total stockholders' equity, Beginning of Period at Mar. 31, 2021	946.1	$ 0.9	835.7	781.7	(215.5)	(456.7)
Shares oustanding, Beginning of Period (in shares) at Mar. 31, 2021		69.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	73.9			73.9
Other Comprehensive Income (Loss) – net of tax	15.5				15.5
Issuance of Common Stock related to compensation	0.4		0.4
Compensation under Stock-based Plans - net	7.9		7.8			0.1
Dividends	(8.4)		0.1	(8.5)
Acquisition of Treasury Stock	(1.4)					(1.4)
Other	(0.1)			(0.1)
Shares outstanding, End of Period (in shares) at Jun. 30, 2021		69.2
Total stockholders' equity, End of Period at Jun. 30, 2021	1,033.9	$ 0.9	844.0	847.0	(200.0)	(458.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	48.1			48.1
Other Comprehensive Income (Loss) – net of tax	(29.3)				(29.3)
Issuance of Common Stock related to compensation	0.2		0.2
Compensation under Stock-based Plans - net	6.5		6.5			0.0
Dividends	(8.4)		0.1	(8.5)
Acquisition of Treasury Stock	(0.2)					(0.2)
Other	(0.1)					(0.1)
Shares outstanding, End of Period (in shares) at Sep. 30, 2021		69.2
Total stockholders' equity, End of Period at Sep. 30, 2021	1,050.7	$ 0.9	850.8	886.6	(229.3)	(458.3)
Total stockholders' equity, Beginning of Period at Dec. 31, 2021	1,109.6	$ 0.9	860.0	936.9	(228.5)	(459.7)
Shares oustanding, Beginning of Period (in shares) at Dec. 31, 2021		69.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	51.9			51.9
Other Comprehensive Income (Loss) – net of tax	(20.0)				(20.0)
Issuance of Common Stock related to compensation (in shares)		0.5
Issuance of Common Stock related to compensation	16.3		16.3
Compensation under Stock-based Plans - net (in shares)		0.1
Compensation under Stock-based Plans - net	(14.8)		(15.8)			1.0
Dividends	(9.1)		0.2	(9.3)
Acquisition of Treasury Stock	(19.8)					(19.8)
Acquisition of Treasury Stock (in shares)		(0.5)
Shares outstanding, End of Period (in shares) at Mar. 31, 2022		69.3
Total stockholders' equity, End of Period at Mar. 31, 2022	1,114.1	$ 0.9	860.7	979.5	(248.5)	(478.5)
Total stockholders' equity, Beginning of Period at Dec. 31, 2021	1,109.6	$ 0.9	860.0	936.9	(228.5)	(459.7)
Shares oustanding, Beginning of Period (in shares) at Dec. 31, 2021		69.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	207.8
Shares outstanding, End of Period (in shares) at Sep. 30, 2022		66.9
Total stockholders' equity, End of Period at Sep. 30, 2022	1,034.7	$ 0.9	874.0	1,117.4	(401.3)	(556.3)
Total stockholders' equity, Beginning of Period at Mar. 31, 2022	1,114.1	$ 0.9	860.7	979.5	(248.5)	(478.5)
Shares oustanding, Beginning of Period (in shares) at Mar. 31, 2022		69.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	74.1			74.1
Other Comprehensive Income (Loss) – net of tax	(72.4)				(72.4)
Issuance of Common Stock related to compensation (in shares)		0.1
Issuance of Common Stock related to compensation	1.8		1.8
Compensation under Stock-based Plans - net (in shares)		(0.1)
Compensation under Stock-based Plans - net	4.4		4.3			0.1
Dividends	(8.9)		0.2	(9.1)
Acquisition of Treasury Stock	(64.3)					(64.3)
Acquisition of Treasury Stock (in shares)		(1.9)
Other	0.1			0.1
Shares outstanding, End of Period (in shares) at Jun. 30, 2022		67.4
Total stockholders' equity, End of Period at Jun. 30, 2022	1,048.9	$ 0.9	867.0	1,044.6	(320.9)	(542.7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	81.8			81.8
Other Comprehensive Income (Loss) – net of tax	(80.4)				(80.4)
Issuance of Common Stock related to compensation	0.4		0.4
Compensation under Stock-based Plans - net	6.4		6.4			0.0
Dividends	(8.8)		0.2	(9.0)
Acquisition of Treasury Stock	(13.6)					(13.6)
Acquisition of Treasury Stock (in shares)		(0.5)
Shares outstanding, End of Period (in shares) at Sep. 30, 2022		66.9
Total stockholders' equity, End of Period at Sep. 30, 2022	$ 1,034.7	$ 0.9	$ 874.0	$ 1,117.4	$ (401.3)	$ (556.3)