Reconciliation of Net Earnings Attributable to Common Shareowners and Weighted-Average Shares Outstanding used to Calculate Basic and Diluted Earnings per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Numerator
Net Earnings Attributable to Common Shareowners	$ 293.6	$ 277.6	$ 464.2	$ 671.3
Denominator:
Basic earnings per share - weighted-average shares	149,748	149,514	150,101	149,353
Weighted Average Number Diluted Shares Outstanding Adjustment	2,746	2,712	3,023	2,509
Diluted earnings per share - weighted-average shares	152,494	152,226	153,124	151,862
Basic earnings per share of common stock:
Total basic earnings per share of common stock	$ (1.96)	$ (1.86)	$ (3.09)	$ (4.49)
Diluted earnings per share of common stock:
Total dilutive earnings per share of common stock	$ 1.93	$ 1.82	$ 3.03	$ 4.42