Financing (Long-Term Indebtedness) (Table) (Details) € in Millions, SFr in Millions, $ in Millions, ¥ in Billions	Dec. 31, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2017 EUR (€)	May 11, 2017 USD ($)	May 11, 2017 JPY (¥)	Feb. 28, 2016 USD ($)	Feb. 28, 2016 JPY (¥)	Dec. 08, 2015 USD ($)	Dec. 08, 2015 CHF (SFr)	Sep. 15, 2015 USD ($)	Jul. 08, 2015 USD ($)	Jul. 08, 2015 EUR (€)	Dec. 31, 2018 CHF (SFr)	Dec. 31, 2018 EUR (€)	Dec. 31, 2018 JPY (¥)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 CHF (SFr)	Dec. 31, 2017 EUR (€)	Dec. 31, 2017 JPY (¥)	Aug. 31, 2015 USD ($)	Dec. 31, 2001 USD ($)
Debt Instrument [Line Items]
Long-term debt	$ 9,740.3															$ 10,522.1
Other
Debt Instrument [Line Items]
Long-term debt	66.7															208.6
Senior notes | 1.0% senior unsecured notes due 2019
Debt Instrument [Line Items]
Long-term debt	$ 687.0															718.4
Interest rate of debt instrument	1.00%												1.00%	1.00%	1.00%
Debt instrument, redemption price, percentage	99.696%
Debt instrument, face amount | €														€ 600				€ 600
Senior notes | 2.4% senior unsecured notes due 2020
Debt Instrument [Line Items]
Long-term debt	$ 498.5															497.7
Interest rate of debt instrument	2.40%												2.40%	2.40%	2.40%
Debt instrument, redemption price, percentage	99.757%
Senior notes | 5.0% senior unsecured notes due 2020
Debt Instrument [Line Items]
Long-term debt	$ 386.7															394.6
Interest rate of debt instrument	5.00%												5.00%	5.00%	5.00%
Senior notes | 0.352% senior unsecured notes due 2021
Debt Instrument [Line Items]
Long-term debt	$ 273.2															265.5
Interest rate of debt instrument	0.352%												0.352%	0.352%	0.352%
Debt instrument, redemption price, percentage	100.00%
Net proceeds from debt						$ 262.0	¥ 29.9
Debt instrument, face amount | ¥															¥ 30.0				¥ 30.0
Senior notes | 1.7% senior unsecured notes due 2022
Debt Instrument [Line Items]
Long-term debt	$ 913.2															955.6
Interest rate of debt instrument	1.70%												1.70%	1.70%	1.70%
Debt instrument, redemption price, percentage	99.651%
Debt instrument, face amount | €														€ 800				800
Senior notes | Floating rate senior unsecured notes due 2022
Debt Instrument [Line Items]
Long-term debt	$ 285.7															299.1
Debt instrument, redemption price, percentage	100.147%
Basis spread percentage to determine floating interest rate	0.30%
Debt instrument, face amount | €														€ 250				250
Senior notes | 2.5% senior unsecured notes due 2025
Debt Instrument [Line Items]
Long-term debt	$ 912.6															955.6
Interest rate of debt instrument	2.50%												2.50%	2.50%	2.50%
Debt instrument, redemption price, percentage	99.878%
Debt instrument, face amount | €														€ 800				800
Senior notes | 3.35% senior unsecured notes due 2025
Debt Instrument [Line Items]
Long-term debt	$ 496.8															496.3
Interest rate of debt instrument	3.35%												3.35%	3.35%	3.35%
Debt instrument, redemption price, percentage	99.857%
Senior notes | 0.3% senior unsecured notes due 2027
Debt Instrument [Line Items]
Long-term debt	$ 279.9															272.2
Interest rate of debt instrument	0.30%												0.30%	0.30%	0.30%
Debt instrument, redemption price, percentage	100.00%
Debt instrument, face amount | ¥															¥ 30.8				30.8
Senior notes | 1.2% senior unsecured notes due 2027
Debt Instrument [Line Items]
Long-term debt	$ 682.0															714.1
Interest rate of debt instrument	1.20%												1.20%	1.20%	1.20%
Debt instrument, redemption price, percentage	99.682%
Debt instrument, face amount | €														€ 600				€ 600
Senior notes | 0.65% senior unsecured notes due 2032
Debt Instrument [Line Items]
Long-term debt	$ 483.4															470.2
Interest rate of debt instrument	0.65%												0.65%	0.65%	0.65%
Debt instrument, redemption price, percentage	100.00%
Debt instrument, face amount | ¥															¥ 53.2				¥ 53.2
Senior notes | 4.375% senior unsecured notes due 2045
Debt Instrument [Line Items]
Long-term debt	$ 499.3															499.3
Interest rate of debt instrument	4.375%												4.375%	4.375%	4.375%
Debt instrument, redemption price, percentage	99.784%
Senior notes | Euro-denominated senior unsecured notes, 2019, 2022 and 2025 tranches
Debt Instrument [Line Items]
Net proceeds from debt											$ 2,400.0	€ 2,200
Senior notes | U.S. dollar-denominated senior unsecured notes
Debt Instrument [Line Items]
Net proceeds from debt										$ 2,000.0
Senior notes | Euronotes
Debt Instrument [Line Items]
Net proceeds from debt		$ 940.0	€ 843
Senior notes | 2027 and 2032 Yen notes
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	100.00%
Net proceeds from debt				$ 744.0	¥ 83.6
Convertible debt | Zero-coupon LYONS due 2021
Debt Instrument [Line Items]
Long-term debt	$ 56.2															69.1
Interest rate of debt instrument	0.00%												0.00%	0.00%	0.00%						2.375%
Debt instrument, face amount																					$ 830.0
Bonds | 0.5% senior unsecured bonds due 2023
Debt Instrument [Line Items]
Long-term debt	$ 550.7															555.5
Interest rate of debt instrument	0.50%												0.50%	0.50%	0.50%
Debt instrument, redemption price, percentage	100.924%
Debt instrument, face amount | SFr													SFr 540				SFr 540
Bonds | 0.0% senior unsecured bonds due 2017
Debt Instrument [Line Items]
Interest rate of debt instrument	0.00%												0.00%	0.00%	0.00%
Bonds | 1.125% senior unsecured bonds due 2028
Debt Instrument [Line Items]
Long-term debt	$ 218.1															$ 220.3
Interest rate of debt instrument	1.125%												1.125%	1.125%	1.125%
Debt instrument, redemption price, percentage	102.87%
Debt instrument, face amount | SFr													SFr 210				SFr 210
Bonds | Swiss franc-denominated senior unsecured bonds
Debt Instrument [Line Items]
Net proceeds from debt								$ 739.0	SFr 758
Debt instrument, face amount | SFr									SFr 100
Commercial paper | U.S. dollar denominated and euro-denominated commercial paper
Debt Instrument [Line Items]
Long-term debt	$ 2,450.3
Pall Corporation | Senior notes | 5.0% senior unsecured notes due 2020
Debt Instrument [Line Items]
Debt instrument, face amount																				$ 375.0
Long-term debt, fair value																				$ 417.0
Interest rate, effective percentage																				2.90%