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
	Mar. 31, 2018	Apr. 01, 2017
Numerator
Net Earnings Attributable to Common Shareowners	$ 170.6	$ 393.7
Denominator:
Basic earnings per share - weighted-average shares	150,612	149,208
Weighted Average Number Diluted Shares Outstanding Adjustment	3,293	2,318
Diluted earnings per share - weighted-average shares	153,905	151,526
Basic earnings per share of common stock:
Total basic earnings per share of common stock	$ (1.13)	$ (2.64)
Diluted earnings per share of common stock:
Total dilutive earnings per share of common stock	$ 1.11	$ 2.60