XML 102 R27.htm IDEA: XBRL DOCUMENT v2.4.1.9
Research and Development Costs (Tables)
 12 Months Ended
Dec. 31, 2014
Research and Development [Abstract]  
Schedule of Research and Development Costs
 
 Year Ended December 31,
(millions of dollars)
2014
 
2013
 
2012
Gross R&D expenditures
$
392.8

 
$
350.4

 
$
309.3

Customer reimbursements
(56.6
)
 
(47.2
)
 
(43.4
)
Net R&D expenditures
$
336.2

 
$
303.2

 
$
265.9