Discontinued Operations and Dispositions - Key Components of Income and Major Classes of Assets and Liabilities from Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 27, 2019	Jun. 28, 2019	Mar. 29, 2019	Dec. 31, 2018	Sep. 28, 2018	Jun. 29, 2018	Mar. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Sales									$ 6.1	$ 750.5	$ 900.0
Cost of sales									(6.2)	(438.9)	(522.9)
Selling, general, and administrative expenses									0.0	(92.3)	(124.5)
Research and development expenses									0.0	(26.9)	(36.7)
Gain (loss) on disposition of discontinued operations before income taxes									(2.1)	1,909.9	0.0
Interest expense and other									0.0	(4.6)	(5.3)
Earnings (loss) before income taxes									(2.2)	2,097.7	210.6
Income taxes									15.7	(102.2)	(50.4)
Earnings from discontinued operations, net of income taxes	$ 14.0	$ (0.2)	$ (0.7)	$ 0.4	$ 1,872.2	$ 31.3	$ 44.8	$ 47.2	13.5	1,995.5	$ 160.2
ASSETS
Accounts receivable, net	0.0				4.2				0.0	4.2
Inventories	0.0				4.4				0.0	4.4
Other current assets	3.2				21.4				3.2	21.4
Total current assets, discontinued operations	3.2				30.0				3.2	30.0
Total assets, discontinued operations	3.2				30.0				3.2	30.0
Current liabilities:
Trade accounts payable	0.0				9.2				0.0	9.2
Accrued expenses and other current liabilities	0.0				21.5				0.0	21.5
Total current liabilities, discontinued operations	0.0				30.7				0.0	30.7
Total liabilities, discontinued operations	$ 0.0				$ 30.7				$ 0.0	$ 30.7