Income Taxes Federal Audits (Details)	9 Months Ended
Sep. 30, 2019 USD ($)
Internal Revenue Service (IRS) [Member]
Investments, Owned, Federal Income Tax Note [Line Items]
Proposed Tax Adjustments	$ 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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