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Research and Development (Tables)
6 Months Ended
Jun. 30, 2013
Research and Development [Abstract]  
Project Research and Development Expenses Incurred and Amounts Funded
The following table summarizes the COTS program research and development expenses incurred and amounts funded by NASA (in millions):

  
 
Second Quarter
  
First Six Months
  
Inception
   
 
 
2013
  
2012
  
2013
  
2012
  
To Date
   
Research and development costs incurred (1)
 
$
13.6
  
$
11.1
  
$
31.5
  
$
32.3
  
$
512.0
   
Less  amounts funded by NASA
  
(1.3
)
  
(4.5
)
  
(3.8
)
  
(15.5
)
  
(286.0
)
 (2)
 
Net research and development expenses
 
$
12.3
  
$
6.6
  
$
27.7
  
$
16.8
  
$
226.0
   
__________________________________________
(1) Includes associated general and administrative expenses.
(2) Through June 30, 2013, the company has received $281 million in cash from NASA and as of June 30, 2013, the company recorded an approximately $5 million receivable due from NASA.