Acquisition and Disposals - Brooklyn (Details) $ in Millions	Sep. 30, 2016 USD ($)
Brooklyn Underwriting Pty Limited and Brooklyn IT Pty Limited [Member]
Business Acquisition [Line Items]
Definite lived intangible assets acquired	$ 22.9

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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