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SIGNIFICANT ACCOUNTING POLICIES AND RECENT ACCOUNTING PRONOUNCEMENTS Balance Sheet Adjustments, Adoption of ASU 2016-09 (Details) - Accounting Standards Update 2016-09 $ in Millions	Jan. 01, 2017 USD ($)
Deferred Tax Asset [Member]
Consolidated Balance Sheet Statements
Cumulative Effect Adjustment	$ 7.5
Retained Earnings [Member]
Consolidated Balance Sheet Statements
Cumulative Effect Adjustment	$ 7.5

Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

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