Discontinued Operations - 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, 2018	Sep. 28, 2018	Jun. 29, 2018	Mar. 30, 2018	Dec. 31, 2017	Sep. 29, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Sales									$ 750.5	$ 900.0	$ 846.1
Cost of sales									(438.9)	(522.9)	(497.2)
Selling, general and administrative expenses									(92.3)	(124.5)	(126.0)
Research and development expenses									(26.9)	(36.7)	(33.8)
Gain on disposition of discontinued operations before income taxes									1,909.9	0.0	0.0
Interest expense and other									(4.6)	(5.3)	(2.6)
Earnings before income taxes									2,097.7	210.6	186.5
Income taxes									(102.2)	(50.4)	(54.4)
Net earnings	$ 1,872.2	$ 31.3	$ 44.8	$ 47.2	$ 39.2	$ 41.1	$ 41.7	$ 38.2	1,995.5	160.2	$ 132.1
Current Assets
Trade accounts receivable, net	4.2				123.1				4.2	123.1
Inventories	4.4				73.9				4.4	73.9
Other current assets	21.4				6.8				21.4	6.8
Total current assets, discontinued operations	30.0				203.8				30.0	203.8
Noncurrent Assets
Property, plant and equipment, net	0.0				102.1				0.0	102.1
Goodwill	0.0				538.2				0.0	538.2
Other intangible assets, net	0.0				19.6				0.0	19.6
Other assets, discontinued operations	0.0				7.3				0.0	7.3
Total other assets, discontinued operations	0.0				667.2				0.0	667.2
Total assets, discontinued operations	30.0				871.0				30.0	871.0
Current liabilities:
Trade accounts payable	9.2				98.5				9.2	98.5
Accrued expenses and other current liabilities	21.5				59.5				21.5	59.5
Total current liabilities, discontinued operations	30.7				158.0				30.7	158.0
Noncurrent Assets
Other long-term liabilities	0.0				64.2				0.0	64.2
Total liabilities, discontinued operations	$ 30.7				$ 222.2				$ 30.7	$ 222.2