SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION

Temporary Investments



In millions	September 30, 2012		December 31, 2011
Temporary investments	$	889	$	2,904

Accounts and Notes Receivable



In millions	September 30, 2012		December 31, 2011
Accounts and notes receivable, net:
Trade	$	3,485	$	3,039
Other	214		447
Total	$	3,699	$	3,486

Inventories



In millions	September 30, 2012		December 31, 2011
Raw materials	$	393	$	368
Finished pulp, paper and packaging	1,673		1,503
Operating supplies	530		390
Other	71		59
Total	$	2,667	$	2,320

Depreciation Expense



	Three Months Ended September 30,				Nine Months Ended September 30,
In millions	2012		2011		2012		2011
Depreciation expense	$	347	$	319	$	1,045	$	961

Valuation Accounts

Certain valuation accounts were as follows:



In millions	September 30, 2012		December 31, 2011
Accumulated depreciation	$	18,777	$	18,591
Allowance for doubtful accounts	118		126

There was no material activity related to asset retirement obligations during either of the nine months ended September 30, 2012 or 2011.

Interest

Cash payments related to interest were as follows:



	Nine Months Ended September 30,
In millions	2012		2011
Interest payments	$	496	$	415

Amounts related to interest were as follows:



	Three Months Ended September 30,				Nine Months Ended September 30,
In millions	2012		2011		2012		2011
Interest expense (a)	$	197	$	144	$	559	$	444
Interest income (a)	34		14		56		41
Capitalized interest costs	10		6		29		14

(a)

Interest expense and interest income exclude approximately $15 million and $35 million for the three months and nine months ended September 30, 2012, respectively, and $13 million and $39 million for the three months and nine months ended September 30, 2011, respectively, related to investments in and borrowings from variable interest entities for which the Company has a legal right of offset (see Note 12).

Postretirement Benefit Expense

The components of the Company’s postretirement benefit expense were as follows:



	Three Months Ended September 30,						Nine Months Ended September 30,
In millions	2012			2011			2012			2011
Service cost	$	1		$	—		$	2		$	1
Interest cost	5			5			15			16
Actuarial loss	3			2			8			7
Amortization of prior service credit	(8		)	(6		)	(22		)	(19		)
Net postretirement benefit expense	$	1		$	1		$	3		$	5