Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2011

Fair Value Measurements [Abstract]

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

The following tables present the assets and liabilities that are measured at fair value on a recurring basis in our balance sheets:

	Balance at		Basis of Fair Value Measurements
	September 30,
($ in millions)	2011		Level 1		Level 2		Level 3
Assets:
Short-term investments	$	23.6	$	23.6	$	-	$	-
Deferred compensation assets		3.1		3.1		-		-
Foreign currency contracts		0.2		-		0.2		-
Commodity contracts		0.2		-		0.2		-
	$	27.1	$	26.7	$	0.4	$	-
Liabilities:
Contingent consideration	$	1.9	$	-	$	-	$	1.9
Deferred compensation liabilities		4.4		4.4		-		-
Interest rate swap contracts		9.2		-		9.2		-
	$	15.5	$	4.4	$	9.2	$	1.9

	Balance at		Basis of Fair Value Measurements
	December 31,
($ in millions)	2010		Level 1		Level 2		Level 3
Assets:
Short-term investments	$	0.6	$	0.6	$	-	$	-
Deferred compensation assets		3.6		3.6		-		-
	$	4.2	$	4.2	$	-	$	-
Liabilities:
Contingent consideration	$	2.3	$	-	$	-	$	2.3
Deferred compensation liabilities		5.4		5.4		-		-
Interest rate swap contracts		6.1		-		6.1		-
	$	13.8	$	5.4	$	6.1	$	2.3

Summary of changes in Level 3 fair value measurements

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

	($ in millions)
Balance, December 31, 2010	$	2.3
Increase in fair value recorded in earnings		0.4
Reduction in fair value recorded in earnings		(0.8	)
Balance, September 30, 2011	$	1.9