Pension and Other Postretirement Benefits (Tables)

9 Months Ended

Sep. 29, 2012

Compensation and Retirement Disclosure [Abstract]

Net periodic pension costs under retirement plans and other post-retirement benefits

The net periodic pension costs under retirement plans and other postretirement benefits were as follows:

	Thirteen Weeks Ended September 29, 2012
	Canada plans			U.S. plan		U.K. plan			MCI plan		Consolidated
	(In millions)
Defined Benefit Plans
Service cost	$	4.1		$	—	$	—		$	0.1	$	4.2
Interest cost	16.7			—		24.6			—		41.3
Expected return on plan assets	(15.3		)	—		(28.3		)	—		(43.6		)
Amortization of prior service cost	0.2			—		—			—		0.2
Amortization of net actuarial loss	5.4			—		4.4			—		9.8
Less expected participant contributions	(0.4		)	—		—			—		(0.4		)
Net periodic pension cost (benefit)	$	10.7		$	—	$	0.7		$	0.1	$	11.5
Other Postretirement Benefits
Service cost—benefits earned during the period	$	0.6		$	0.1	$	—		$	—	$	0.7
Interest cost on projected benefit obligation	2.0			—		—			—		2.0
Amortization of prior service cost (gain)	(0.9		)	—		—			—		(0.9		)
Amortization of net actuarial loss (gain)	(0.1		)	—		—			—		(0.1		)
Net periodic postretirement benefit cost	$	1.6		$	0.1	$	—		$	—	$	1.7

	Thirteen Weeks Ended September 24, 2011
	Canada plans			U.S. plan			U.K. plan			MCI plan		Consolidated
	(In millions)
Defined Benefit Plans
Service cost	$	4.8		$	—		$	—		$	—	$	4.8
Interest cost	18.3			(0.2		)	27.2			—		45.3
Expected return on plan assets	(18.7		)	—			(31.5		)	—		(50.2		)
Amortization of prior service cost	0.2			—			—			—		0.2
Amortization of net actuarial loss	2.4			—			2.7			—		5.1
Less expected participant contributions	(0.4		)	—			—			—		(0.4		)
Special termination of benefits	—			—			—			—		—
Net periodic pension cost (benefit)	$	6.6		$	(0.2	)	$	(1.6	)	$	—	$	4.8
Other Postretirement Benefits
Service cost—benefits earned during the period	$	0.6		$	0.1		$	—		$	—	$	0.7
Interest cost on projected benefit obligation	1.9			—			—			—		1.9
Amortization of prior service cost (gain)	(1.0		)	—			—			—		(1.0		)
Amortization of net actuarial loss	(0.9		)	—			—			—		(0.9		)
Net periodic postretirement benefit cost	$	0.6		$	0.1		$	—		$	—	$	0.7

	Thirty-Nine Weeks Ended September 29, 2012
	Canada plans			U.S. plan		U.K. plan			MCI plan		Consolidated
	(In millions)
Defined Benefit Plans
Service cost	$	12.3		$	—	$	—		$	0.3	$	12.6
Interest cost	49.9			—		73.9			—		123.8
Expected return on plan assets	(45.8		)	—		(85.0		)	—		(130.8		)
Amortization of prior service cost	0.6			—		—			—		0.6
Amortization of net actuarial loss	16.2			—		13.2			—		29.4
Less expected participant contributions	(1.2		)	—		—			—		(1.2		)
Net periodic pension cost (benefit)	$	32.0		$	—	$	2.1		$	0.3	$	34.4
Other Postretirement Benefits
Service cost—benefits earned during the period	$	1.8		$	0.3	$	—		$	—	$	2.1
Interest cost on projected benefit obligation	5.9			—		—			—		5.9
Amortization of prior service cost (gain)	(2.7		)	—		—			—		(2.7		)
Amortization of net actuarial loss (gain)	(0.3		)	—		—			—		(0.3		)
Net periodic postretirement benefit cost	$	4.7		$	0.3	$	—		$	—	$	5.0

	Thirty-Nine Weeks Ended September 24, 2011
	Canada plans			U.S. plan		U.K. plan			MCI plan		Consolidated
	(In millions)
Defined Benefit Plans
Service cost	$	14.3		$	—	$	—		$	—	$	14.3
Interest cost	54.9			—		81.6			—		136.5
Expected return on plan assets	(56.1		)	—		(94.6		)	—		(150.7		)
Amortization of prior service cost	0.6			—		—			—		0.6
Amortization of net actuarial loss	7.1			—		8.2			—		15.3
Less expected participant contributions	(1.2		)	—		—			—		(1.2		)
Special termination of benefits	—			—		—			—		—
Net periodic pension cost (benefit)	$	19.6		$	—	$	(4.8	)	$	—	$	14.8
Other Postretirement Benefits
Service cost—benefits earned during the period	$	1.6		$	0.3	$	—		$	—	$	1.9
Interest cost on projected benefit obligation	5.8			—		—			—		5.8
Amortization of prior service cost (gain)	(2.9		)	—		—			—		(2.9		)
Amortization of net actuarial loss	(2.7		)	—		—			—		(2.7		)
Net periodic postretirement benefit cost	$	1.8		$	0.3	$	—		$	—	$	2.1