Segment Information (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Sep. 30, 2012
Total assets by segment:
Consolidated assets	$ 4,989,928	$ 5,057,247
Wholesale/U.S. Nutrition
Total assets by segment:
Consolidated assets	2,626,571	2,531,145
European Retail
Total assets by segment:
Consolidated assets	891,773	864,231
Direct Response/E-Commerce
Total assets by segment:
Consolidated assets	716,058	772,240
North American Retail
Total assets by segment:
Consolidated assets	112,612	91,510
Corporate/Manufacturing
Total assets by segment:
Consolidated assets	$ 642,914	$ 798,121