Fair Value Measurements (Tables)

12 Months Ended

Nov. 30, 2013

Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]

Assets And Liabilities Measured At Fair Value On Recurring Basis

Our population of assets and liabilities subject to fair value measurements on a recurring basis at November 30, 2013 and 2012 are as follows:

			Fair value measurements using fair value hierarchy as of  November 30, 2013
(millions)	Fair value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	63.0	$	63.0	—		—
Insurance contracts	90.1		—		$	90.1	—
Bonds and other long-term investments	13.3		13.3		—		—
Interest rate derivatives	12.2		—		12.2		—
Foreign currency derivatives	1.1		—		1.1		—
Total	$	179.7	$	76.3	$	103.4	—
Liabilities
Foreign currency derivatives	$	1.6	—		$	1.6	—
Total	$	1.6	—		$	1.6	—

			Fair value measurements using fair value hierarchy as of November 30, 2012
(millions)	Fair value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	79.0	$	79.0	—		—
Insurance contracts	72.5		—		$	72.5	—
Bonds and other long-term investments	13.6		13.6		—		—
Interest rate derivatives	16.7		—		16.7		—
Foreign currency derivatives	0.9		—		0.9		—
Total	$	182.7	$	92.6	$	90.1	—
Liabilities
Foreign currency derivatives	$	1.9	—		$	1.9	—
Interest rate derivatives	0.1		—		0.1		—
Total	$	2.0	—		$	2.0	—