Fair Value Measurements (Tables)

12 Months Ended

Nov. 30, 2016

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, 2016 and 2015 are as follows:

			Fair value measurements using fair value hierarchy as of  November 30, 2016
(millions)	Fair value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	118.4	$	118.4	$	—	$	—
Insurance contracts	106.0		—		106.0		—
Bonds and other long-term investments	10.2		10.2		—		—
Foreign currency derivatives	4.9		—		4.9		—
Total	$	239.5	$	128.6	$	110.9	$	—
Liabilities
Interest rate derivatives	$	1.2	$	—	$	1.2	$	—
Foreign currency derivatives	5.4		—		5.4		—
Contingent consideration related to acquisition	28.9		—		—		28.9
Total	$	35.5	$	—	$	6.6	$	28.9

			Fair value measurements using fair value hierarchy as of November 30, 2015
(millions)	Fair value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	112.6	$	112.6	$	—	$	—
Insurance contracts	104.1		—		104.1		—
Bonds and other long-term investments	8.5		8.5		—		—
Interest rate derivatives	2.5		—		2.5		—
Foreign currency derivatives	3.4		—		3.4		—
Total	$	231.1	$	121.1	$	110.0	$	—
Liabilities
Interest rate derivatives	$	0.6	$	—	$	0.6	$	—
Foreign currency derivatives	0.7		—		0.7		—
Contingent consideration related to acquisition	27.1		—		—		27.1
Total	$	28.4	$	—	$	1.3	$	27.1

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

The change in fair value of our Level 3 liabilities, which relates solely to the contingent consideration related to our acquisition of D&A, for the years ended November 30, 2016 and 2015 is summarized as follows (in millions):

	Beginning of year		Acquisition-date fair value		Settlements		Changes in fair value including accretion		Impact of foreign currency			Balance as of end of year
Year ended November 30, 2016	$	27.1	$	—	$	—	$	1.8	$	—		$	28.9
Year ended November 30, 2015	$	—	$	27.7	$	—	$	0.5	$	(1.1	)	$	27.1