New Accounting Pronouncements Impact of ASU Adoption (Details) $ in Millions	12 Months Ended
Dec. 31, 2016 USD ($)
Minimum [Member]
Estimate Impact of ASU Adoption [Line Items]
Estimated Impact of ASU 2016-09 Adoption	$ 20
Maximum [Member]
Estimate Impact of ASU Adoption [Line Items]
Estimated Impact of ASU 2016-09 Adoption	$ 30

[Line Items] for Estimate Impact of ASU Adoption [Table]

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