Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Assets
NOL carryforwards	$ 56.2	$ 4.5
Deferred revenue	1.8	1.7
Capitalized research expenses	3.8	4.8
Tax credit carryforwards	10.7	5.0
Non-qualified stock options	340.9	250.5
Plant and equipment, primarily differences in depreciation	2.0	0.0
Inventory	11.3	14.5
Other assets	43.0	41.5
Intangible assets	661.3	654.7
Accrued and other expenses	233.2	191.6
Subtotal	1,364.2	1,168.8
Valuation allowance	(90.8)	(39.7)
Total deferred taxes	1,273.4	1,129.1
Liabilities
Plant and equipment, primarily differences in depreciation	0.0	(7.4)
Other assets	(3.7)	(4.0)
Intangible assets	(1,135.4)	(1,183.2)
Unremitted earnings	(316.5)	(316.5)
Unrealized (gains) losses on securities	(129.9)	(236.5)
Subtotal	(1,585.5)	(1,747.6)
Total deferred taxes	(312.1)	(618.5)
Deferred tax assets and liabilities classified on the company's balance sheet:
Current assets	0.0	11.7
Other assets (non-current)	65.6	56.6
Current liabilities	0.0	(131.2)
Other non-current liabilities	(377.7)	(555.6)
Total deferred taxes	$ (312.1)	$ (618.5)