Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2012

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)	September 30, 2012		Level 1		Level 2		Level 3
Assets:
Short-term investments	$	21.9	$	21.9	$	—	$	—
Deferred compensation assets	3.7		3.7		—		—
Foreign currency contracts	0.3		—		0.3		—
	$	25.9	$	25.6	$	0.3	$	—
Liabilities:
Contingent consideration	$	3.0	$	—	$	—	$	3.0
Deferred compensation liabilities	6.9		6.9		—		—
Interest rate swap contracts	8.9		—		8.9		—
Foreign currency contracts	3.0		—		3.0		—
Long-term debt	364.7		—		364.7		—
	$	386.5	$	6.9	$	376.6	$	3.0

	Balance at		Basis of Fair Value Measurements
($ in millions)	December 31, 2011		Level 1		Level 2		Level 3
Assets:
Short-term investments	$	26.5	$	26.5	$	—	$	—
Deferred compensation assets	3.3		3.3		—		—
	$	29.8	$	29.8	$	—	$	—
Liabilities:
Contingent consideration	$	2.1	$	—	$	—	$	2.1
Deferred compensation liabilities	4.6		4.6		—		—
Interest rate swap contracts	8.8		—		8.8		—
Long-term debt	279.2		—		279.2		—
	$	294.7	$	4.6	$	288.0	$	2.1

Summary of changes in Level 3 fair value measurements

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

	($ in millions)
Balance, December 31, 2011	$	2.1
Increase in fair value recorded in earnings	0.9
Balance, September 30, 2012	$	3.0