PENSION PLANS AND RETIREMENT BENEFITS (Tables)

9 Months Ended

Sep. 30, 2011

PENSION PLANS AND RETIREMENT BENEFITS [Abstract]

Components of Net Periodic Benefit (Income) Cost

We also provide certain postretirement health care (medical) and life insurance benefits for eligible active and retired domestic employees.  The health care plans are contributory with participants’ contributions adjusted annually based on medical rates of inflation and plan experience.

	Pension Benefits						Other Postretirement Benefits
	Three Months Ended September 30,						Three Months Ended September 30,
	2011			2010			2011		2010
Components of Net Periodic Benefit (Income) Cost	($ in millions)
Service cost	$	1.6		$	1.5		$	0.2	$	0.3
Interest cost		23.4			24.4			0.7		0.8
Expected return on plans’ assets		(34.9	)		(34.6	)		—		—
Amortization of prior service cost		0.1			0.1			—		—
Recognized actuarial loss		3.8			3.3			1.0		0.5
Net periodic benefit (income) cost	$	(6.0	)	$	(5.3	)	$	1.9	$	1.6

	Pension Benefits						Other Postretirement Benefits
	Nine Months Ended September 30,						Nine Months Ended September 30,
	2011			2010			2011			2010
Components of Net Periodic Benefit (Income) Cost	($ in millions)
Service cost	$	4.8		$	4.5		$	0.9		$	1.0
Interest cost		70.6			73.9			2.6			2.8
Expected return on plans’ assets		(104.7	)		(103.9	)		—			—
Amortization of prior service cost		0.3			0.4			(0.1	)		(0.1	)
Recognized actuarial loss		11.3			9.7			2.4			1.9
Curtailment		1.1			—			—			—
Net periodic benefit (income) cost	$	(16.6	)	$	(15.4	)	$	5.8		$	5.6