Collaborations (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Collaborative Arrangements and Non-collaborative Arrangement Transactions [Table Text Block]

The following table summarizes the composition of our total revenue recognized from all transactions, including collaboration activity:

	Three Months Ended
	March 31,
	2013		2012
Net product sales	$	5,448.5	$	5,413.8
Collaboration and other revenue	153.5		188.2
Total revenue	$	5,602.0	$	5,602.0

Erbitux [Member]

Schedule of Collaborative Arrangements and Non-collaborative Arrangement Transactions [Table Text Block]

The following table summarizes the revenue recognized with respect to Erbitux:

	Three Months Ended
	March 31,
	2013		2012
Net product sales	$	25.3	$	34.0
Collaboration and other revenue	69.6		79.3
Total revenue	$	94.9	$	113.3

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: 

	Three Months Ended
	March 31,
	2013		2012
Net product sales	$	64.1	$	48.5
Collaboration and other revenue	—		51.3
Total revenue	$	64.1	$	99.8
Income related to transfer of exenatide commercial rights (1)	$	495.4	$	—