Fair Value Measurement (Tables)

6 Months Ended

Jun. 30, 2013

Fair Value Disclosures [Abstract]

Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

Assets and liabilities measured at fair value on a recurring basis as at June 30, 2013 and December 31, 2012 consisted of the following (in millions):

	Fair Value Measurements as at June 30, 2013  Using:
	Total		Level 1		Level 2		Level 3
Assets:
Marketable securities	$	8.0	$	8.0	$	—	$	—
Foreign exchange forward contracts		0.7				0.7
Total assets		8.7		8.0		0.7		—
Liabilities:
Contingent consideration		220.5		14.6		—		205.9
Total liabilities	$	220.5	$	14.6	$	—	$	205.9

	Fair Value Measurements as at December 31, 2012  Using:
	Total		Level 1		Level 2		Level 3
Assets
Marketable securities	$	9.0	$	9.0	$	—	$	—
Total assets		9.0		9.0		—		—
Liabilities:
Contingent consideration		363.1		—		—		363.1
Total liabilities	$	363.1	$	—	$	—	$	363.1

Summary of Changes in Fair Value of all Financial Assets and Liabilities Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs

The table below provides a summary of the changes in fair value of all financial assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the six months ended June 30, 2013 and 2012 (in millions):

Six Months Ended June 30, 2013

	Balance at December 31, 2012		Net transfers in to (out of) Level 3			Purchases and settlements, net		Net accretion and fair value adjustments		Foreign currency translation			Balance at June 30, 2013
Liabilities:
Contingent consideration obligations	$	363.1	($	335.8	)	$	179.0	$	1.4	($	1.8	)	$	205.9

Six Months Ended June 30, 2012

	Balance at December 31, 2011		Net transfers in to (out of) Level 3		Purchases and settlements, net			Net accretion and fair value adjustments			Foreign currency translation			Balance at June 30, 2012
Liabilities:
Contingent consideration obligations	$	181.6		—		(115.3	)		(15.5	)		(0.8	)	$	50.0