Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2014

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value

The following tables present the assets and liabilities recorded at fair value on a recurring basis:

	Balance at		Basis of Fair Value Measurements
($ in millions)	March 31, 2014		Level 1		Level 2		Level 3
Assets:
Short-term investments	$	11.7	$	11.7	$	—	$	—
Deferred compensation assets	5.8		5.8		—		—
Foreign currency contracts	0.1		—		0.1		—
	$	17.6	$	17.5	$	0.1	$	—
Liabilities:
Contingent consideration	$	4.7	$	—	$	—	$	4.7
Deferred compensation liabilities	10.3		10.3		—		—
Interest rate swap contracts	5.1		—		5.1		—
Foreign currency contracts	0.3		—		0.3		—
	$	20.4	$	10.3	$	5.4	$	4.7

	Balance at		Basis of Fair Value Measurements
($ in millions)	December 31, 2013		Level 1		Level 2		Level 3
Assets:
Short-term investments	$	7.5	$	7.5	$	—	$	—
Deferred compensation assets	5.7		5.7		—		—
	$	13.2	$	13.2	$	—	$	—
Liabilities:
Contingent consideration	$	4.3	$	—	$	—	$	4.3
Deferred compensation liabilities	12.1		12.1		—		—
Interest rate swap contracts	5.6		—		5.6		—
	$	22.0	$	12.1	$	5.6	$	4.3

Summary of Changes in Level 3 Fair Value Measurements

The following table provides a summary of changes in our Level 3 fair value measurements:

	Three Months Ended March 31,
	2014		2013
Beginning Balance	$	4.3	$	3.3
Increase in fair value recorded in earnings	0.4		—
Ending Balance	$	4.7	$	3.3