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Commitments, Contingencies and Other Items (Details) - Reduction in Taxes $ in Millions	Sep. 30, 2015 USD ($)
Gain Contingencies [Line Items]
Gain contingency, estimated amount	$ 8.5
District of Columbia
Gain Contingencies [Line Items]
Gain contingency, estimated amount	$ 3.6

X

- Definition

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.

+ References

No definition available.

+ Details

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X

- Definition

The amount or range of possible amounts of gain that could be realized upon the resolution of a contingency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 450



-SubTopic 30



-Section 50



-Paragraph 1



-URI http://asc.fasb.org/extlink&oid=6397426&loc=d3e17499-108355

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