Long-Term Debt Stock Repurchase (Details) $ in Millions	Sep. 30, 2015 USD ($)
Class A Common Shares [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount	$ 300.0

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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