Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 30, 2018	Mar. 31, 2017
Net sales	$ 572.6	$ 560.0
Cost of sales	295.8	259.9
Gross profit	276.8	300.1
Selling, general and administrative expenses	192.4	217.6
Research and development expenses	64.1	45.0
Restructuring charges, net	23.1	10.3
Gains on divestiture and license	0.0	(59.1)
Operating (loss) income	(2.8)	86.3
Interest expense	(91.4)	(94.2)
Interest income	3.2	0.9
Other income (expense), net	4.6	(79.9)
Loss from continuing operations before income taxes	(86.4)	(86.9)
Income tax benefit	(43.4)	(42.0)
Income from continuing operations	(43.0)	(44.9)
Income from discontinued operations, net of income taxes	25.0	444.1
Net (loss) income	$ (18.0)	$ 399.2
Basic earnings per share (Note 8):
Income from continuing operations, per share	$ (0.50)	$ (0.43)
(Loss) income from discontinued operations, per share	0.29	4.30
Net income, per share	$ (0.21)	$ 3.86
Basic weighted-averaged shares outstanding (in shares)	86.1	103.3
Diluted earnings per share (Note 8):
Income from continuing operations, per share	$ (0.50)	$ (0.43)
(Loss) income from discontinued operations, per share	0.29	4.29
Net income, per share	$ (0.21)	$ 3.85
Diluted weighted-average shares outstanding (in shares)	86.1	103.6