EMPLOYEE BENEFIT PLANS AND OTHER POSTRETIREMENT BENEFITS (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Pension and Postretirement Benefit Plans

The following tables provide information related to the Company’s pension and postretirement benefit plans.

	Pension Plans									Postretirement Plans
	2012			2011			2010			2012			2011			2010
	(In thousands)
Change in Benefit Obligation
Benefit obligation at beginning of period	$	314,155		$	246,985		$	203,292		$	25,937		$	23,215		$	20,080
Service cost		22,424			19,808			18,315			1,856			1,599			1,399
Interest cost		14,800			13,473			12,091			1,241			1,189			1,130
Plan amendments		2,271			1,827			837			2,266			—			—
Actuarial loss		29,338			35,399			15,153			1,698			755			1,931
Participant contributions		—			—			—			1,055			942			838
Benefits paid		(4,274	)		(3,337	)		(2,703	)		(2,247	)		(1,763	)		(2,163	)
Benefit obligation at plan year end	$	378,714		$	314,155		$	246,985		$	31,806		$	25,937		$	23,215
Accumulated benefit obligation portion of above	$	341,729		$	280,820		$	214,676
Change in Fair Value of Plan Assets
Plan assets at fair value at beginning of period	$	185,122		$	167,033		$	140,065		$	—		$	—		$	—
Actual return on plan assets		21,527			(732	)		14,457			—			—			—
Company contributions		35,984			22,158			15,214			1,192			821			1,325
Participant contributions		—			—			—			1,055			942			838
Benefits paid		(4,274	)		(3,337	)		(2,703	)		(2,247	)		(1,763	)		(2,163	)
Fair value of plan assets at plan year end	$	238,359		$	185,122		$	167,033		$	—		$	—		$	—

	Pension Plans						Postretirement Plans
	December 31, 2012			December 31, 2011			December 31, 2012			December 31, 2011
	(In thousands)
Development of Net Amount Recognized
Benefit obligation in excess of plan assets at December 31	$	(140,355	)	$	(129,033	)	$	(31,806	)	$	(25,937	)
Amounts Recognized in Statement of Financial Position
Current liabilities	$	(6,290	)	$	(5,232	)	$	(1,333	)	$	(1,052	)
Noncurrent liabilities		(134,065	)		(123,801	)		(30,473	)		(24,885	)
Accrued benefit recognized at December 31	$	(140,355	)	$	(129,033	)	$	(31,806	)	$	(25,937	)
Amounts Recognized in Accumulated Other Comprehensive (Income) Loss, Net of Tax
Prior service cost	$	21,309		$	23,573		$	(216	)	$	(481	)
Actuarial loss		54,951			45,791			5,955			5,193
Total	$	76,260		$	69,364		$	5,739		$	4,712

	Pension Plans									Postretirement Plans
	2012			2011			2010			2012			2011			2010
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost for benefits earned during the year	$	22,424		$	19,808		$	18,315		$	1,856		$	1,599		$	1,399
Interest cost on accumulated benefit obligation		14,800			13,473			12,091			1,241			1,189			1,130
Expected return on plan assets		(12,108	)		(13,544	)		(11,207	)		—			—			—
Net amortization of unrecognized amounts
Prior service cost		5,993			5,782			5,685			(419	)		(416	)		(416	)
Actuarial loss		4,916			411			247			452			449			342
Net periodic benefit cost	$	36,025		$	25,930		$	25,131		$	3,130		$	2,821		$	2,455

Schedule of Weighted-Average Assumptions Used To Determine Benefit and Net Periodic Benefit Cost

For the year ended December 31, 2013, the Company expects to recognize in net periodic benefit cost $6.2 million ($3.8 million net of tax) and $(0.4) million ($0.3 million net of tax) of prior service cost for pension and postretirement plans, respectively, and $6.0 million ($3.7 million net of tax) and $0.5 million ($0.3 million net of tax) of actuarial loss for pension and postretirement plans, respectively, which is included in accumulated other comprehensive income (loss) at December 31, 2012.

	Pension Plans									Postretirement Plans
	2012			2011			2010			2012			2011			2010
Weighted-Average Assumptions Used to Determine Benefit Obligations at December 31
Discount rate		4.25	%		4.75	%		5.50	%		4.00	%		4.50	%		5.25	%
Rate of compensation increase		4.00	%		4.00	%		4.00	%		N/A			N/A			N/A
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost for the Years Ended December 31
Discount rate		4.75	%		5.50	%		6.00	%		4.50	%		5.25	%		5.75	%
Expected return on plan assets		6.15	%		7.75	%		7.75	%		N/A			N/A			N/A
Rate of compensation increase		4.00	%		4.00	%		4.00	%		N/A			N/A			N/A

Schedule of Assumed Health Care Cost Trend Rates For Its Postretirement Benefits

The Company assumed health care cost trend rates for its postretirement benefits plans were as follows:

	2012			2011			2010
Health care cost trend rate assumed for next year		8.00	%		8.00	%		7.50	%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)		5.00	%		5.50	%		5.00	%
Year that the rate reaches the ultimate trend rate		2020			2016			2016

Schedule of Effects of One-Percentage Point Change In Assumed Health Care Cost Trend Rates on Its Postretirement Benefits

A one-percentage point change in assumed health care cost trend rates would have the following effects on the 2012 postretirement benefit obligation and the 2012 net post retirement benefit cost:

	1-Percentage Point Increase		1-Percentage Point Decrease
	(In thousands)
Effect on postretirement benefit obligation	$	647	$	(575	)
Effect on net postretirement benefit cost		59		(51	)

Schedule of Pension Plans' Assets Investments

Pension plans’ assets were invested in the following classes of securities at December 31, 2012 and 2011:

	Percentage of Fair Value
	2012			2011
Equity securities		39	%		36	%
Debt securities		61	%		63	%
Other		—	%		1	%

Schedule of Pension Plans' Assets Fair Value Measured On a Recurring Basis

The fair values of PCA’s pension plans’ assets at December 31, 2012 and 2011, measured on a recurring basis, by asset category are as follows:

	Fair Value Measurements at December 31, 2012
Asset Category	Total		Quoted Prices in Active Markets for identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(In thousands)
Short-term investments	$	394	$	—	$	394	$	—
Equity securities:
U.S. large value		15,021		15,021		—		—
U.S. large growth		12,029		12,029		—		—
U.S. mid-cap value		2,481		2,481		—		—
U.S. mid-cap growth		4,734		4,734		—		—
U.S. small blend		5,033		—		5,033		—
Foreign large blend		39,204		39,204		—		—
Diversified emerging markets		7,722		7,722		—		—
Real estate		6,881		6,881		—		—
Debt securities:
Government bonds		29,644		—		29,644		—
Corporate bonds		115,216		48,699		66,517		—
Total	$	238,359	$	136,771	$	101,588	$	—

	Fair Value Measurements at December 31, 2011
Asset Category	Total		Quoted Prices in Active Markets for identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(In thousands)
Short-term investments	$	1,257	$	—	$	1,257	$	—
Equity securities:
U.S. large value		11,272		11,272		—		—
U.S. large growth		9,172		9,172		—		—
U.S. mid-cap value		1,914		1,914		—		—
U.S. mid-cap growth		3,684		3,684		—		—
U.S. small blend		3,784		—		3,784		—
Foreign large blend		27,164		27,164		—		—
Diversified emerging markets		5,306		5,306		—		—
Real estate		5,405		5,405		—		—
Debt securities:
Government bonds		24,372		—		24,372		—
Corporate bonds		91,792		36,929		54,863		—
Total	$	185,122	$	100,846	$	84,276	$	—

Schedule of Estimated Benefit Payments

The following are estimated benefit payments to be paid to current plan participants by year:

	Pension Plans		Postretirement Plans
	(In thousands)
2013	$	6,290	$	1,333
2014		7,926		1,430
2015		9,719		1,508
2016		11,500		1,639
2017		13,304		1,821
2018 — 2022		97,293		11,707