ACQUISITION OF DAKO Proforma Consolidated Operating Results (Details) (Dako [Member], USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
	Apr. 30, 2012	Apr. 30, 2012
Dako [Member]
Business Acquisition
Net revenue	$ 1,824	$ 3,555
Net income	$ 244	$ 455
Net income per share - basic	$ 0.70	$ 1.31
Net income per share - diluted	$ 0.69	$ 1.29