Consolidated Condensed Balance Sheets (Parenthetical) - USD ($) $ in Millions	Apr. 01, 2017	Dec. 31, 2016	Mar. 26, 2016
Statement of Financial Position [Abstract]
Accounts receivable allowance	$ 39.3	$ 39.4	$ 42.7
Common stock, par value	$ 1	$ 1	$ 1
Common stock, shares authorized	320,000,000	320,000,000	320,000,000
Common stock, shares issued (including shares in treasury)	105,735,062	105,647,040	105,567,828
Treasury shares	8,827,675	8,522,425	5,892,172