Pensions and Other Postretirement Benefits

9 Months Ended

Sep. 30, 2012

Compensation and Retirement Disclosure [Abstract]

Pensions and Other Postretirement Benefits

Pensions and Other Postretirement Benefits

The net periodic benefit costs for the three and nine months ended September 30, 2012 and 2011 were as follows:

	Pensions
	Three Months Ended September 30						Nine Months Ended September 30
	2012			2011			2012			2011
	(Millions)
Service cost	$	16		$	16		$	48		$	48
Interest cost	61			64			183			192
Expected return on plan assets	(74		)	(77		)	(224		)	(234		)
Amortization of actuarial losses	39			31			115			91
Curtailment (gains) losses	—			—			—			4
Net periodic pension cost	$	42		$	34		$	122		$	101

PPG does not have a mandatory contribution to make to its U.S. defined benefit pension plans in 2012 and PPG will not make a voluntary contribution in 2012. PPG expects to make mandatory contributions to its non-U.S. plans in 2012 of approximately $90 million, of which $59 million was made as of September 30, 2012.

In January 2011, the Company approved an amendment to one of its U.S. defined benefit pension plans that represented 77 percent of the total U.S. projected benefit obligation at December 31, 2010. Pursuant to this amendment, employees ceased accruing benefits under this plan as of December 31, 2011 or will cease accruing benefits as of December 31, 2020 depending upon the employee’s combined age and service to PPG. The affected employees will participate in the Company’s defined contribution retirement plan from the date their benefit under the defined benefit plan is frozen. The Company remeasured the projected benefit obligation of the amended plan, which resulted in an approximate $65 million reduction in the liability and lowered 2011 pension expense by approximately $12 million. The Company recognized a curtailment loss associated with this plan amendment of $4 million in the first quarter of 2011.

	Other Postretirement Benefits
	Three Months Ended September 30						Nine Months Ended September 30
	2012			2011			2012			2011
	(Millions)
Service cost	$	5		$	5		$	16		$	14
Interest cost	14			15			43			47
Amortization of prior service credit	(3		)	(3		)	(9		)	(9		)
Amortization of actuarial losses	8			8			25			23
Net periodic other postretirement benefit cost	$	24		$	25		$	75		$	75