Fair Value Measurements (Tables)

12 Months Ended

Nov. 30, 2017

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 are as follows:

			Fair value measurements using fair value hierarchy as of  November 30, 2017
(millions)	Fair value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	186.8	$	186.8	$	—	$	—
Insurance contracts	119.5		—		119.5		—
Bonds and other long-term investments	7.5		7.5		—		—
Foreign currency derivatives	12.7		—		12.7		—
Total	$	326.5	$	194.3	$	132.2	$	—
Liabilities
Interest rate derivatives	$	2.5	$	—	$	2.5	$	—
Foreign currency derivatives	4.7		—		4.7		—
Total	$	7.2	$	—	$	7.2	$	—

			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, 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 2017 and 2016 is summarized as follows (in millions):

	Beginning of year		Changes in fair value including accretion		Impact of foreign currency		Effect of agreed upon settlement			Balance as of end of year
Year ended November 30, 2017	28.9		0.3		1.7		(30.9		)	—
Year ended November 30, 2016	$	27.1	$	1.8	$	—	$	—		$	28.9