Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value, Assets and Liabilities Measured on Recurring Basis

The following tables present information about our financial instruments measured at fair value on a recurring basis as of September 30, 2017 and December 31, 2016, and indicate the fair value hierarchy of the valuation techniques utilized to determine such fair value.

	September 30, 2017												Balance Sheet Classification
	Level 1			Level 2			Level 3			Total
Assets
Cash equivalents	$	153.2		$	0.0		$	0.0		$	153.2		Cash and cash equivalents
Short-term marketable securities	0.1			0.0			0.0			0.1			Other current assets
Long-term investments	0.4			0.0			0.0			0.4			Other non-current assets
Total	$	153.7		$	0.0		$	0.0		$	153.7
As a percentage of total assets	1.3		%	0.0		%	0.0		%	1.3		%
Liabilities
Contingent acquisition obligations 1	$	0.0		$	0.0		$	164.2		$	164.2
	December 31, 2016												Balance Sheet Classification
	Level 1			Level 2			Level 3			Total
Assets
Cash equivalents	$	440.8		$	0.0		$	0.0		$	440.8		Cash and cash equivalents
Short-term marketable securities	3.0			0.0			0.0			3.0			Other current assets
Long-term investments	0.4			0.0			0.0			0.4			Other non-current assets
Total	$	444.2		$	0.0		$	0.0		$	444.2
As a percentage of total assets	3.6		%	0.0		%	0.0		%	3.6		%
Liabilities
Contingent acquisition obligations 1	$	0.0		$	0.0		$	205.4		$	205.4

1 Contingent acquisition obligations includes deferred acquisition payments and unconditional obligations to purchase additional noncontrolling equity shares of consolidated subsidiaries. Fair value measurement of the obligations is based upon actual and projected operating performance targets as specified in the related agreements. The decrease in this balance of $41.2 from December 31, 2016 to September 30, 2017 is primarily due to payments of $91.4, partially offset by acquisitions and exercised options of $38.2. The amounts payable within the next twelve months are classified in accrued liabilities; any amounts payable thereafter are classified in other non-current liabilities.

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis

The following table presents information about our financial instruments that are not measured at fair value on a recurring basis as of September 30, 2017 and December 31, 2016, and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value.

	September 30, 2017								December 31, 2016
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Total long-term debt	$	0.0	$	1,606.2	$	45.9	$	1,652.1	$	0.0	$	1,574.7	$	65.4	$	1,640.1