Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Schedule of assets and liabilities measured at fair value on a recurring basis

The following tables present, by level within the fair value hierarchy, certain of our financial assets and liabilities:

	Balance at		Basis of Fair Value Measurements
($ in millions)	March 31, 2013		Level 1		Level 2		Level 3
Assets:
Short-term investments	$	8.2	$	8.2	$	—	$	—
Deferred compensation assets	4.5		4.5		—		—
Foreign currency contracts	0.2		—		0.2		—
Commodity contracts	0.1		—		0.1		—
	$	13.0	$	12.7	$	0.3	$	—
Liabilities:
Contingent consideration	$	3.3	$	—	$	—	$	3.3
Deferred compensation liabilities	8.8		8.8		—		—
Interest rate swap contracts	7.9		—		7.9		—
Foreign currency contracts	3.1		—		3.1		—
Long-term debt	435.3		—		435.3		—
	$	458.4	$	8.8	$	446.3	$	3.3

	Balance at		Basis of Fair Value Measurements
($ in millions)	December 31, 2012		Level 1		Level 2		Level 3
Assets:
Short-term investments	$	12.4	$	12.4	$	—	$	—
Deferred compensation assets	4.0		4.0		—		—
	$	16.4	$	16.4	$	—	$	—
Liabilities:
Contingent consideration	$	3.3	$	—	$	—	$	3.3
Deferred compensation liabilities	7.6		7.6		—		—
Interest rate swap contracts	8.6		—		8.6		—
Foreign currency contracts	1.4		—		1.4		—
Long-term debt	386.0		—		386.0		—
	$	406.9	$	7.6	$	396.0	$	3.3

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,
	2013		2012
Beginning Balance	$	3.3	$	2.1
Increase in fair value recorded in earnings	—		0.2
Ending Balance	$	3.3	$	2.3