Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Net sales	$ 1,231.3	$ 1,261.6	$ 3,663.1	$ 3,949.3
Cost of sales	733.5	777.1	2,196.4	2,385.2
Gross profit	497.8	484.5	1,466.7	1,564.1
Operating expenses
Distribution	21.5	21.6	64.2	65.9
Research and development	38.4	50.2	120.8	142.5
Selling	143.5	154.6	454.1	506.9
Administration	123.3	105.4	326.9	317.2
Impairment charges	7.8	1,614.4	47.4	2,028.8
Restructuring charges	3.8	6.6	54.7	17.9
Other operating income	(2.9)	0.0	(41.0)	0.0
Total operating expenses	335.4	1,952.8	1,027.1	3,079.2
Operating income (loss)	162.4	(1,468.3)	439.6	(1,515.1)
Change in financial assets	2.6	377.4	24.2	1,492.6
Interest expense, net	34.7	54.6	133.1	163.2
Other (income) expense, net	(3.6)	1.0	(1.1)	32.4
Loss on extinguishment of debt	0.0	0.7	135.2	1.1
Income (loss) before income taxes	128.7	(1,902.0)	148.2	(3,204.4)
Income tax expense (benefit)	84.2	(311.8)	101.8	(550.7)
Net income (loss)	$ 44.5	$ (1,590.2)	$ 46.4	$ (2,653.7)
Earnings (loss) per share
Basic	$ 0.31	$ (11.10)	$ 0.33	$ (18.53)
Diluted	$ 0.31	$ (11.10)	$ 0.32	$ (18.53)
Weighted-average shares outstanding
Basic	141.3	143.3	142.5	143.2
Diluted	141.7	143.3	142.8	143.2
Dividends declared per share (in dollars per share)	$ 0.16	$ 0.145	$ 0.480	$ 0.435