Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2012

Fair Value Measurements

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

The following tables present assets and liabilities measured at fair value on a recurring basis (in millions):

				Fair Value Measurements at Reporting Date Using
	December 31, 2012			Quoted prices in Active Markets for Identical Assets (Level 1)			Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Equity securities	$	651.7		$	651.7		$			$
Investments in pooled funds		47.9						47.9
Fixed income securities		18.4						18.4
Deferred compensation liabilities		(43.8	)		(43.8	)
Interest rate swap liability		(2.3	)					(2.3	)
Total	$	671.9		$	607.9		$	64.0		$

				Fair Value Measurements at Reporting Date Using
	December 31, 2011			Quoted prices in Active Markets for Identical Assets (Level 1)			Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Equity securities	$	808.2		$	808.2		$			$
Investments in pooled funds		46.0						46.0
Fixed income securities		19.0						19.0
Deferred compensation liabilities		(39.9	)		(39.9	)		—
Interest rate swap liability		(4.3	)					(4.3	)
Total	$	829.0		$	768.3		$	60.7		$