Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2011

Fair Value Measurements [Abstract]

Carrying Amounts And Estimated Fair Values Of Other Financial Instruments

	December 31, 2011				December 31, 2010
(In millions)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial Assets:
Current portion of note receivable	$	0.6	$	0.7	$	1.6	$	1.6
Long-term note receivable		0.1		0.1		0.8		0.8
Financial Liabilities:
Short-term borrowings		2.6		2.6		90.0		90.0
3.35% Senior notes		249.7		260.2		249.7		250.2