Condensed Consolidated Statements of Shareholders' Equity Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance, at Beginning of the Year at Dec. 31, 2017	$ 1,482.9	$ 76.9	$ 374.4	$ 1,966.8	$ (575.4)	$ (359.8)
Net Earnings (Loss)	72.9	0.0	0.0	72.9	0.0	0.0
Other Comprehensive Income	11.0	0.0	0.0	0.0	0.0	11.0
Dividends	(16.6)	0.0	0.0	(16.6)	0.0	0.0
Compensation Plans and Other	(5.7)	0.0	(17.0)	0.0	11.3	0.0
Common Stock Repurchases	(35.0)	0.0	0.0	0.0	(35.0)	0.0
Balance, at End of Quarter at Mar. 31, 2018	1,480.8	76.9	357.4	1,994.4	(599.1)	(348.8)
ASU No. 2014-09 Adoption	(28.7)	0.0	0.0	(28.7)	0.0	0.0
Balance, at Beginning of the Year at Dec. 31, 2018	1,582.6	76.9	371.1	2,135.7	(638.0)	(363.1)
Net Earnings (Loss)	(36.3)	0.0	0.0	(36.3)	0.0	0.0
Other Comprehensive Income	1.0	0.0	0.0	0.0	0.0	1.0
Dividends	(18.3)	0.0	0.0	(18.3)	0.0	0.0
Compensation Plans and Other	(2.1)	0.0	(11.2)	0.0	9.1	0.0
Balance, at End of Quarter at Mar. 30, 2019	$ 1,526.9	$ 76.9	$ 359.9	$ 2,081.1	$ (628.9)	$ (362.1)