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Business Combinations (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012 Y	Mar. 07, 2012
Business Combinations (Textual) [Abstract]
Goodwill, other increases (decreases)	3
Micromet, Inc. [Member]
Business Combinations (Textual) [Abstract]
Total consideration		1,146
Business acquisition remaining consideration to be paid		47
Finite-lived intangible assets, estimated useful life (in years)	10
Goodwill		$ 368

This element represents the acquisition-date fair value of the total consideration transferred which consists of the sum of the acquisition-date fair values of the assets transferred by the acquirer, the liabilities incurred by the acquirer to former owners of the acquiree, and the equity interests issued by the acquirer.

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