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Collaborations (Tables)
 12 Months Ended
Dec. 31, 2013
Erbitux [Member]
  
Schedule of Collaborative Arrangements and Non-collaborative Arrangement Transactions [Table Text Block]
The following table summarizes our revenue recognized with respect to Erbitux:
 
2013
 
2012
 
2011
Net product sales
$
58.5

 
$
76.4

 
$
87.6

Collaboration and other revenue
315.2

 
320.6

 
321.6

Total revenue
$
373.7

 
$
397.0

 
$
409.2
Exenatide [Member]
  
Schedule of Collaborative Arrangements and Non-collaborative Arrangement Transactions [Table Text Block]
The following table summarizes the revenue and other income recognized with respect to exenatide:
 
2013
 
2012
 
2011
Net product sales
$
133.1

 
$
207.8

 
$
179.6

Collaboration and other revenue
—

 
70.1

 
243.1

Total revenue
$
133.1

 
$
277.9

 
$
422.7

 
 
 
 
 
 
Income related to termination of the exenatide collaboration with Amylin(1)
$
495.4

 
$
787.8

 
$
—

1 Presented in other-net, (income) expense