Fair Value Measurements (Tables)

3 Months Ended

Feb. 28, 2013

Fair Value Disclosures [Abstract]

Assets and liabilities measured at fair value on recurring basis

Our population of financial assets and liabilities subject to fair value measurements on a recurring basis are as follows (in millions):

			Fair value measurements using fair value hierarchy As of
			February 28, 2013
	Fair Value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	68.6	$	68.6	$	—	$	—
Insurance contracts	75.7		—		75.7		—
Bonds & other long-term investments	13.9		13.9		—		—
Interest rate derivatives	15.4		—		15.4		—
Foreign currency derivatives	2.3		—		2.3		—
Total	$	175.9	$	82.5	$	93.4	$	—
Liabilities
Foreign currency derivatives	$	1.4	$	—	$	1.4	$	—

			Fair value measurements using fair value hierarchy As of
			February 29, 2012
	Fair Value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	54.4	$	54.4	$	—	$	—
Insurance contracts	62.9		—		62.9		—
Bonds & other long-term investments	13.9		13.9		—		—
Interest rate derivatives	17.4		—		17.4		—
Foreign currency derivatives	1.3		—		1.3		—
Total	$	149.9	$	68.3	$	81.6	$	—
Liabilities
Foreign currency derivatives	$	1.0	$	—	$	1.0	—

			Fair value measurements using fair value hierarchy As of
			November 30, 2012
	Fair Value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	79.0	$	79.0	$	—	$	—
Insurance contracts	72.5		—		72.5		—
Bonds & 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	$	—