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Basis of Presentation - Tax Cuts and Jobs Act (Details) $ in Millions	3 Months Ended
	Sep. 30, 2018 USD ($)
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax Cuts and Jobs Act of 2017, reclassification from AOCI to Retained Earnings, tax effect	$ 10.7
AOCI
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax Cuts and Jobs Act of 2017, reclassification from AOCI to Retained Earnings, tax effect	$ (10.7)

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Tax Cuts and Jobs Act, Reclassification From AOCI To Retained Earnings, Tax Effect

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