Accumulated Other Comprehensive Income/(Loss) (Reclassifications from Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Integration and acquisition costs	$ 179.3	$ 343.7	$ 419.0	$ 459.7
Cost of sales	1,108.3	1,108.9	2,240.7	2,435.9
Other income, net	29.0	2.5	52.2	7.0
Income from continuing operations before income taxes and equity in earnings of equity method investees	734.2	261.5	1,327.3	623.9
Income taxes	(124.4)	(24.3)	(167.7)	(31.1)
Income from continuing operations, net of taxes	$ 615.5	$ 241.5	1,166.1	596.3
Total reclassifications for the period			68.9	5.7
Accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications for the period			(1.0)	(5.7)
Pension and other employee benefit | Amounts reclassified from AOCI
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income from continuing operations before income taxes and equity in earnings of equity method investees			(1.0)	0.9
Income taxes			0.0	0.0
Income from continuing operations, net of taxes			(1.0)	0.9
Amortization of net prior service credit | Amounts reclassified from AOCI
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income, net			(0.4)	0.0
Amortization of actuarial (gain)/loss | Amounts reclassified from AOCI
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income, net			(0.6)	0.9
Hedging activities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications for the period				5.4
Hedging activities | Amounts reclassified from AOCI
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales			0.0	(8.3)
Income from continuing operations before income taxes and equity in earnings of equity method investees			0.0	(8.3)
Income taxes			0.0	2.9
Income from continuing operations, net of taxes			0.0	(5.4)
Available for sale securities gain
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications for the period			67.9	1.2
Available for sale securities gain | Amounts reclassified from AOCI
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income, net			0.0	(1.2)
Income from continuing operations before income taxes and equity in earnings of equity method investees			0.0	(1.2)
Income taxes			0.0	0.0
Income from continuing operations, net of taxes			$ 0.0	$ (1.2)