Segment Information (Segment Results) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Oct. 02, 2015	Jul. 03, 2015	Apr. 03, 2015	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Sales	$ 5,884.8	$ 5,023.4	$ 4,960.2	$ 4,694.7	$ 5,224.2	$ 4,707.1	$ 4,783.5	$ 4,439.2	$ 20,563.1	$ 19,154.0	$ 18,283.1
Operating profit	978.8	$ 800.8	$ 934.4	$ 755.1	866.8	$ 866.2	$ 875.5	$ 738.1	3,469.1	3,346.6	3,120.5
Identifiable assets	48,222.2				36,991.7				48,222.2	36,991.7	34,672.2
Depreciation and amortization									1,051.3	889.5	850.6
Capital expenditures, gross									633.0	580.6	538.1
Discontinued operations
Segment Reporting Information [Line Items]
Identifiable assets	0.0				1,883.5				0.0	1,883.5	1,933.4
Operating segments | Test & Measurement
Segment Reporting Information [Line Items]
Sales									2,654.8	2,702.1	2,582.4
Operating profit									614.4	573.2	515.1
Depreciation and amortization									80.2	83.5	90.7
Capital expenditures, gross									23.8	17.0	25.4
Operating segments | Test & Measurement | Continuing operations
Segment Reporting Information [Line Items]
Identifiable assets	3,575.1				3,550.9				3,575.1	3,550.9	3,561.6
Operating segments | Environmental
Segment Reporting Information [Line Items]
Sales									3,635.4	3,547.3	3,316.9
Operating profit									782.4	705.2	696.5
Depreciation and amortization									89.8	85.7	62.7
Capital expenditures, gross									90.8	76.1	46.5
Operating segments | Environmental | Continuing operations
Segment Reporting Information [Line Items]
Identifiable assets	3,881.7				3,824.9				3,881.7	3,824.9	3,584.5
Operating segments | Life Sciences & Diagnostics
Segment Reporting Information [Line Items]
Sales									8,213.1	7,185.7	6,856.4
Operating profit									1,088.5	1,105.9	1,009.8
Depreciation and amortization									660.1	539.0	517.3
Capital expenditures, gross									399.4	391.1	386.7
Operating segments | Life Sciences & Diagnostics | Continuing operations
Segment Reporting Information [Line Items]
Identifiable assets	29,448.7				13,743.9				29,448.7	13,743.9	13,614.7
Operating segments | Dental
Segment Reporting Information [Line Items]
Sales									2,736.8	2,193.1	2,094.9
Operating profit									370.4	304.4	304.9
Depreciation and amortization									132.0	85.0	83.3
Capital expenditures, gross									53.3	24.4	30.7
Operating segments | Dental | Continuing operations
Segment Reporting Information [Line Items]
Identifiable assets	5,906.9				6,224.3				5,906.9	6,224.3	4,095.1
Operating segments | Industrial Technologies
Segment Reporting Information [Line Items]
Sales									3,323.0	3,525.8	3,432.5
Operating profit									799.3	801.3	722.9
Depreciation and amortization									81.0	88.8	89.2
Capital expenditures, gross									63.6	70.6	47.1
Operating segments | Industrial Technologies | Continuing operations
Segment Reporting Information [Line Items]
Identifiable assets	4,100.2				4,149.0				4,100.2	4,149.0	4,363.6
Other
Segment Reporting Information [Line Items]
Operating profit									(185.9)	(143.4)	(128.7)
Depreciation and amortization									8.2	7.5	7.4
Capital expenditures, gross									2.1	1.4	1.7
Other | Continuing operations
Segment Reporting Information [Line Items]
Identifiable assets	$ 1,309.6				$ 3,615.2				$ 1,309.6	$ 3,615.2	$ 3,519.3