Consolidated Condensed Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Accumulated depreciation	$ 1,117.3	$ 1,086.8
Preferred stock par value (in dollars per share)	$ 0	$ 0
Preferred stock authorized (in shares)	15,000,000	15,000,000
Preferred stock issued (in shares)	0	0
Preferred stock outstanding (in shares)	0	0
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock authorized (in shares)	2,000,000,000	2,000,000,000
Common stock issued (in shares)	349,000,000	348,200,000
Common stock outstanding (in shares)	348,500,000	347,800,000