Basis of Presentation - Additional Information (Details) $ in Millions	6 Months Ended
	Dec. 31, 2016 group Segment	Jun. 30, 2016 USD ($)
Accounting Policies [Abstract]
Number of reportable segments | Segment	2
Number of Client Groups | group	4
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Investment securities maturity period for consideration as cash equivalents (in days)	90 days
Accounting Standards Update 2015-03 | Other Noncurrent Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt issuance costs		$ (7.1)
Accounting Standards Update 2015-03 | Long-Term Debt Excluding Current Portion
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt issuance costs		7.0
Accounting Standards Update 2015-03 | Current Portion of Long-Term Debt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt issuance costs		$ 0.1