Significant Accounting Policies - Narrative (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
Mar. 31, 2014
Significant Accounting Policies (Textual) [Abstract]
Ownership interests in certain subsidiaries under equity method investment, maximum	100.00%
Voting rights in investment businesses not traded publicly accounted for under the cost method, Maximum	20.00%
Impact of French Tax Law Change	$ 5.7

Additional income tax expense reflecting the impact of change in French tax law. Such increase relates to retroactive application of law to the prior year.

No definition available.

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