Consolidated Condensed Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 27, 2020	Dec. 28, 2019	Jun. 29, 2019
Statement of Financial Position [Abstract]
Accounts receivable allowance	$ 38.2	$ 26.7	$ 25.6
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)	110,006,517	108,329,250	107,997,808
Treasury shares	28,146,537	27,181,512	22,741,032