Goodwill and Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Jun. 29, 2013	Sep. 30, 2012
Segment Software Products
Goodwill and acquired intangible assets	$ 970.7	$ 768.1
Segment Services
Goodwill and acquired intangible assets	$ 42.9	$ 28.1