Retirement Benefits (Tables)

6 Months Ended

May. 31, 2015

Compensation and Retirement Disclosure [Abstract]

Schedule of Components of Retirement Benefit Expense (Income)

Components of retirement benefit expense (income) are:

	Pension Benefits						Postretirement Medical and Life Insurance Benefits
	Three months ended May 31,
	2015			2014			2015			2014
	(In millions)
Service cost	$	2.7		$	2.2		$	—		$	—
Interest cost on benefit obligation	15.9			16.7			0.5			0.7
Assumed return on plan assets	(22.1		)	(23.2		)	—			—
Amortization of prior service credits	—			—			(0.2		)	(0.2		)
Recognized net actuarial losses (gains)	20.9			13.5			(0.9		)	(0.8		)
Retirement benefit expense (income)	$	17.4		$	9.2		$	(0.6	)	$	(0.3	)

	Pension Benefits						Postretirement Medical and Life Insurance Benefits
	Six months ended May 31,
	2015			2014			2015			2014
	(In millions)
Service cost	$	5.4		$	4.4		$	—		$	—
Interest cost on benefit obligation	31.8			33.5			1.0			1.3
Assumed return on plan assets	(44.2		)	(46.4		)	—			—
Amortization of prior service credits	—			—			(0.5		)	(0.4		)
Recognized net actuarial losses (gains)	41.7			26.9			(1.8		)	(1.5		)
Retirement benefit expense (income)	$	34.7		$	18.4		$	(1.3	)	$	(0.6	)