Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2016	Jan. 02, 2016
Statement of Financial Position [Abstract]
Allowances, accounts receivable	$ 39.4	$ 44.4
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	320,000,000	320,000,000
Common stock, shares issued, including treasury shares	105,647,040	103,915,928
Treasury stock, shares	8,522,425	5,457,726