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Equity (Narrative) (Details) $ in Millions | Mar. 31, 2017 USD ($)
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Equity [Abstract] |
Stock Repurchase Program, Authorized Amount | $ 400.0

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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Balance Type: | credit
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