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Accounting Pronouncements (Details) - Accounting Standards Update 2016-09 - New Accounting Pronouncement, Early Adoption, Effect $ in Millions	Dec. 31, 2015 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax benefits related to share-based payment awards, increase in long-term deferred tax assets	$ 45.4
Additional paid-in capital
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase (decrease) in equity from elimination of amounts in long-term deferred tax assets and additional paid-in capital	(3.9)
Retained earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase (decrease) in equity from elimination of amounts in long-term deferred tax assets and additional paid-in capital	$ 49.3

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319

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