XML 53 R43.htm IDEA: XBRL DOCUMENT

Segment information (Details 1) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Total assets	$ 10,237.9	$ 10,557.8
PBM [Member]
Segment Reporting Information [Line Items]
Total assets	9,709.1	10,078.4
EM [Member]
Segment Reporting Information [Line Items]
Total assets	$ 528.8	$ 479.4

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References+ Details