Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 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)	June 30, 2013		Level 1		Level 2		Level 3
Assets:
Short-term investments	$	7.5	$	7.5	$	—	$	—
Deferred compensation assets	4.8		4.8		—		—
	$	12.3	$	12.3	$	—	$	—
Liabilities:
Contingent consideration	$	3.5	$	—	$	—	$	3.5
Deferred compensation liabilities	9.8		9.8		—		—
Interest rate swap contracts	6.6		—		6.6		—
Foreign currency contracts	3.2		—		3.2		—
Long-term debt	400.1		—		400.1		—
	$	423.2	$	9.8	$	409.9	$	3.5

	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:

	Six Months Ended June 30,
	2013		2012
Beginning Balance	$	3.3	$	2.1
Increase in fair value recorded in earnings	0.2		0.4
Ending Balance	$	3.5	$	2.5