XML 41 R30.htm IDEA: XBRL DOCUMENT v3.8.0.1
Research and Development Expenditures (Tables)
 3 Months Ended
Mar. 31, 2018
Research and Development [Abstract]  
Gross and net expenditures on research and development ("R&D") activities
 
 
Three Months Ended
March 31,
(in millions)
 
2018
 
2017
Gross R&D expenditures
 
$
129.7

 
$
112.0

Customer reimbursements
 
(13.0
)
 
(15.6
)
Net R&D expenditures
 
$
116.7

 
$
96.4