Guarantor Financial Information (Consolidating Statements of Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues [Abstract]
Product sales	$ 2,322.1	$ 1,476.2	$ 3,949.4	$ 2,899.4
Royalties and other revenues	107.0	81.4	189.0	146.6
Total revenues	2,429.1	1,557.6	4,138.4	3,046.0
Costs and Expenses [Abstract]
Cost of sales	778.1	228.0	1,026.7	455.8
Research and Development Expense	294.8	775.9	511.9	969.6
Selling, general and administrative	675.3	496.0	1,150.2	914.3
Gain on sale of product rights	(2.3)	(7.1)	(6.5)	(12.3)
Reorganization costs	11.0	13.3	14.3	28.5
Integration and acquisition costs	363.0	(212.4)	454.1	(136.7)
Amortization of acquired intangibles	213.0	131.3	347.6	219.6
Total operating expenses	2,332.9	1,425.0	3,498.3	2,438.8
Operating income/(loss) from continuing operations	96.2	132.6	640.1	607.2
Interest expense	(87.2)	(11.3)	(131.9)	(20.9)
Other (expense)/income, net	6.0	(2.0)	(2.5)	2.3
Total other (expense)/income, net	(79.6)	(12.7)	(131.8)	(16.0)
Income/(loss) from continuing operations before income taxes and equity in earnings/(losses) of equity method investees	16.6	119.9	508.3	591.2
Income taxes benefit / (charge)	70.9	44.1	(11.2)	(13.3)
Equity in income/(losses) of equity method investees	0.9	(0.1)	1.0	0.9
Income/(loss) from continuing operations, net of taxes	86.6	164.1	496.1	577.0
(Loss)/gain from discontinued operations, net of taxes	(248.7)	(4.5)	(239.2)	(7.0)
Net (loss)/income	(162.1)	159.6	256.9	570.0
Comprehensive (loss)/income	(388.5)	208.4	54.9	490.0
Consolidation, Eliminations [Member]
Revenues [Abstract]
Product sales	0.0	0.0	0.0	0.0
Royalties and other revenues	0.0	0.0	0.0	0.0
Total revenues		0.0	0.0	0.0
Costs and Expenses [Abstract]
Cost of sales		0.0	0.0	0.0
Research and Development Expense		0.0	0.0	0.0
Selling, general and administrative	(4.6)	0.4	0.0	0.7
Integration and acquisition costs		0.0	0.0	0.0
Amortization of acquired intangibles	0.0			0.0
Other operating expenses		0.0	0.0	0.0
Total operating expenses	(4.6)	0.4	0.0	0.7
Operating income/(loss) from continuing operations	4.6	(0.4)	0.0	(0.7)
Interest expense		0.0	0.0	0.0
Other (expense)/income, net		0.0	0.0	0.0
Total other (expense)/income, net		0.0	0.0	0.0
Income/(loss) from continuing operations before income taxes and equity in earnings/(losses) of equity method investees		(0.4)	0.0	(0.7)
Income taxes benefit / (charge)		0.0	0.0	0.0
Equity in income/(losses) of equity method investees	249.7	182.8	202.9	610.7
Income/(loss) from continuing operations, net of taxes		(183.2)	(202.9)	(611.4)
(Loss)/gain from discontinued operations, net of taxes		0.0	0.0	0.0
Net (loss)/income		(183.2)	(202.9)	(611.4)
Comprehensive (loss)/income	480.7	(232.0)	(0.9)	(531.4)
Consolidated
Revenues [Abstract]
Product sales	2,322.1	1,476.2	3,949.4	2,899.4
Royalties and other revenues	107.0	81.4	189.0	146.6
Total revenues	2,429.1	1,557.6	4,138.4	3,046.0
Costs and Expenses [Abstract]
Cost of sales	778.1	228.0	1,026.7	455.8
Research and Development Expense	294.8	775.9	511.9	969.6
Selling, general and administrative	675.3	496.0	1,150.2	914.3
Integration and acquisition costs	363.0	(212.4)	454.1	(136.7)
Amortization of acquired intangibles	213.0			219.6
Other operating expenses	8.7	6.2	7.8	16.2
Total operating expenses	2,332.9	1,425.0	3,498.3	2,438.8
Operating income/(loss) from continuing operations	96.2	132.6	640.1	607.2
Interest expense	(85.6)	(10.7)	(129.3)	(18.3)
Other (expense)/income, net	6.0	(2.0)	(2.5)	2.3
Total other (expense)/income, net	(79.6)	(12.7)	(131.8)	(16.0)
Income/(loss) from continuing operations before income taxes and equity in earnings/(losses) of equity method investees	16.6	119.9	508.3	591.2
Income taxes benefit / (charge)	70.9	(44.1)	11.2	13.3
Equity in income/(losses) of equity method investees	(0.9)	(0.1)	1.0	0.9
Income/(loss) from continuing operations, net of taxes	86.6	164.1	496.1	577.0
(Loss)/gain from discontinued operations, net of taxes	(248.7)	(4.5)	(239.2)	(7.0)
Net (loss)/income	(162.1)	159.6	256.9	570.0
Comprehensive (loss)/income	(388.5)	208.4	54.9	490.0
Parent Company [Member]
Revenues [Abstract]
Product sales	0.0	0.0	0.0	0.0
Royalties and other revenues	0.0	0.0	0.0	0.0
Total revenues	0.0	0.0	0.0	0.0
Costs and Expenses [Abstract]
Cost of sales	0.0	0.0	0.0	0.0
Research and Development Expense	0.0	0.0	0.0	0.0
Selling, general and administrative	23.4	7.4	35.8	12.8
Integration and acquisition costs	0.0	0.0	0.0	0.0
Amortization of acquired intangibles	0.0	0.0	0.0	0.0
Other operating expenses	0.0	0.0	0.0	0.0
Total operating expenses	23.4	7.4	35.8	12.8
Operating income/(loss) from continuing operations	(23.4)	(7.4)	(35.8)	(12.8)
Interest expense	(22.6)	(16.4)	(44.5)	(30.4)
Other (expense)/income, net	1.2	(0.2)	0.9	1.2
Total other (expense)/income, net	(21.4)	(16.6)	(43.6)	(29.2)
Income/(loss) from continuing operations before income taxes and equity in earnings/(losses) of equity method investees	(44.8)	(24.0)	(79.4)	(42.0)
Income taxes benefit / (charge)	0.9	(0.8)	(1.9)	(1.3)
Equity in income/(losses) of equity method investees	(118.2)	(182.8)	(334.4)	(610.7)
Income/(loss) from continuing operations, net of taxes	(162.1)	159.6	256.9	570.0
(Loss)/gain from discontinued operations, net of taxes	0.0	0.0	0.0	0.0
Net (loss)/income	(162.1)	159.6	256.9	570.0
Comprehensive (loss)/income	(388.5)	208.4	54.9	490.0
Parent Company [Member] | Consolidation, Eliminations [Member]
Revenues [Abstract]
Total revenues	0.0
Costs and Expenses [Abstract]
Cost of sales	0.0
Research and Development Expense	0.0
Integration and acquisition costs	0.0
Amortization of acquired intangibles			0.0
Other operating expenses	0.0
Interest expense	0.0
Other (expense)/income, net	0.0
Total other (expense)/income, net	0.0
Income/(loss) from continuing operations before income taxes and equity in earnings/(losses) of equity method investees	4.6
Income taxes benefit / (charge)	0.0
Income/(loss) from continuing operations, net of taxes	254.3
(Loss)/gain from discontinued operations, net of taxes	0.0
Net (loss)/income	254.3
Parent Company [Member] | Consolidated
Costs and Expenses [Abstract]
Amortization of acquired intangibles			347.6
Subsidiary Issuer [Member]
Revenues [Abstract]
Product sales	0.0	0.0	0.0	0.0
Royalties and other revenues	0.0	0.0	0.0	0.0
Total revenues	0.0	0.0	0.0	0.0
Costs and Expenses [Abstract]
Cost of sales	5.6		5.6	0.0
Research and Development Expense	1.0		1.0	0.0
Selling, general and administrative	97.2	0.0	97.2	0.0
Integration and acquisition costs	114.9		114.9	0.0
Amortization of acquired intangibles	0.0	0.0	0.0	0.0
Other operating expenses	0.0	0.0	0.0	0.0
Total operating expenses	218.7	0.0	218.7	0.0
Operating income/(loss) from continuing operations	(218.7)	0.0	(218.7)	0.0
Interest expense	(5.7)	0.0	(5.7)	0.0
Other (expense)/income, net	7.7	0.0	7.7	0.0
Total other (expense)/income, net	2.0	0.0	2.0	0.0
Income/(loss) from continuing operations before income taxes and equity in earnings/(losses) of equity method investees	(216.7)	0.0	(216.7)	0.0
Income taxes benefit / (charge)	58.8	0.0	(58.8)	0.0
Equity in income/(losses) of equity method investees	(131.5)	0.0	131.5	0.0
Income/(loss) from continuing operations, net of taxes	(289.4)	0.0	(289.4)	0.0
(Loss)/gain from discontinued operations, net of taxes		0.0	0.0	0.0
Net (loss)/income	(289.4)	0.0	(289.4)	0.0
Comprehensive (loss)/income	(291.2)	0.0	(291.2)	0.0
Subsidiary Issuer [Member] | Consolidation, Eliminations [Member]
Costs and Expenses [Abstract]
Amortization of acquired intangibles		0.0
Subsidiary Issuer [Member] | Consolidated
Costs and Expenses [Abstract]
Amortization of acquired intangibles		131.3
Non-Guarantor Subsidiaries [Member]
Revenues [Abstract]
Product sales	2,322.1	1,476.2	3,949.4	2,899.4
Royalties and other revenues	107.0	81.4	189.0	146.6
Total revenues	2,429.1	1,557.6	4,138.4	3,046.0
Costs and Expenses [Abstract]
Cost of sales	772.5	228.0	1,021.1	455.8
Research and Development Expense	293.8	775.9	510.9	969.6
Selling, general and administrative	559.3	488.2	1,017.2	900.8
Integration and acquisition costs	248.1	(212.4)	339.2	(136.7)
Amortization of acquired intangibles	213.0	131.3	347.6	219.6
Other operating expenses	8.7	6.2	7.8	16.2
Total operating expenses	2,095.4	1,417.2	3,243.8	2,425.3
Operating income/(loss) from continuing operations	333.7	140.4	894.6	620.7
Interest expense	(57.3)	5.7	(79.1)	12.1
Other (expense)/income, net	(2.9)	(1.8)	(11.1)	1.1
Total other (expense)/income, net	(60.2)	3.9	(90.2)	13.2
Income/(loss) from continuing operations before income taxes and equity in earnings/(losses) of equity method investees	273.5	144.3	804.4	633.9
Income taxes benefit / (charge)	11.2	(43.3)	71.9	14.6
Equity in income/(losses) of equity method investees	(0.9)	(0.1)	1.0	0.9
Income/(loss) from continuing operations, net of taxes	283.8	187.7	731.5	618.4
(Loss)/gain from discontinued operations, net of taxes	(248.7)	(4.5)	(239.2)	(7.0)
Net (loss)/income	35.1	183.2	492.3	611.4
Comprehensive (loss)/income	$ (189.5)	$ 232.0	$ 292.1	$ 531.4