Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2017

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

The following tables summarize the bases used to measure financial assets and liabilities that are carried at fair value on a recurring basis in the Condensed Consolidated Balance Sheets:

			Basis of Fair Value Measurement
	Balance as of March 31, 2017		Significant Other Observable Inputs (Level 2)
Assets
Foreign exchange forward contracts	$	0.2	$	0.2
Available-for-sale securities		120.4		120.4
Total assets	$	120.6	$	120.6
Liabilities
Foreign exchange forward contracts		0.4		0.4
Total liabilities	$	0.4	$	0.4

			Basis of Fair Value Measurement
	Balance as of December 31, 2016		Significant Other Observable Inputs (Level 2)
Assets
Foreign exchange forward contracts	$	1.7	$	1.7
Available-for-sale securities	328.7		328.7
Total assets	$	330.4	$	330.4
Liabilities
Foreign exchange forward contracts	1.5		1.5
Total liabilities	$	1.5	$	1.5