Description of the Business and Summary of Significant Accounting Policies - Additional Information (Details) shares in Millions, $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2017 USD ($) shares	Mar. 31, 2017 USD ($)	Jun. 30, 2016 shares	Jun. 30, 2017 USD ($) Segment shares	Jun. 30, 2016 USD ($) shares	Dec. 31, 2016 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of business segments | Segment				3
Business Acquisition [Line Items]
Unrecognized tax benefit						$ 10.1
Offset of valuation allowance						$ 10.1
Decrease in net cash used in investing activities				$ 159.9	$ 104.0
Accounting Standards Update 2016-18
Business Acquisition [Line Items]
Adjustment to cash, cash equivalents and restricted cash beginning balance		$ 38.1		38.1
Adjustment to cash, cash equivalents and restricted cash ending balance	$ 41.9			$ 41.9
Decrease in net cash used in investing activities		$ 3.8
Stock Options
Business Acquisition [Line Items]
Anti-dilutive securities (in shares) | shares	2.8		3.0	2.8	3.0
Restricted Stock Units
Business Acquisition [Line Items]
Anti-dilutive securities (in shares) | shares	4.4		5.3	4.4	5.3