XML 104 R81.htm IDEA: XBRL DOCUMENT v3.6.0.2
Income Taxes (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Examination [Line Items]      
Valuation allowance increases $ 92.7 $ 7.9 $ 88.8
Tax benefit of stock option 57.0    
Federal [Member]      
Income Tax Examination [Line Items]      
Net operating loss carryforwards 1,424.0    
Research and development tax credits 75.0    
State and Local Jurisdiction [Member]      
Income Tax Examination [Line Items]      
Net operating loss carryforwards 494.0    
State and Local Jurisdiction [Member] | Research Tax Credit Carryforward [Member]      
Income Tax Examination [Line Items]      
Research and development tax credits $ 25.0