| Supplemental Financial Statement Information [Note Text Block] |
SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION
Temporary Investments | | | | | | | | | In millions | June 30, 2015 | | December 31, 2014 | Temporary investments | $ | 1,197 |
| | $ | 1,480 |
|
Accounts and Notes Receivable | | | | | | | | | In millions | June 30, 2015 | | December 31, 2014 | Accounts and notes receivable, net: | | | | Trade | $ | 2,878 |
| | $ | 2,860 |
| Other | 262 |
| | 223 |
| Total | $ | 3,140 |
| | $ | 3,083 |
|
Inventories | | | | | | | | | In millions | June 30, 2015 | | December 31, 2014 | Raw materials | $ | 412 |
| | $ | 494 |
| Finished pulp, paper and packaging | 1,357 |
| | 1,273 |
| Operating supplies | 564 |
| | 562 |
| Other | 91 |
| | 95 |
| Total | $ | 2,424 |
| | $ | 2,424 |
|
Depreciation Expense | | | | | | | | | | | | | | | | | | Three Months Ended
June 30, | | Six Months Ended
June 30, | In millions | 2015 | | 2014 | | 2015 | | 2014 | Depreciation expense | $ | 306 |
| | $ | 328 |
| | $ | 610 |
| | $ | 652 |
|
Valuation Accounts
Certain valuation accounts were as follows: | | | | | | | | | In millions | June 30, 2015 | | December 31, 2014 | Accumulated depreciation | $ | 20,513 |
| | $ | 20,340 |
| Allowance for doubtful accounts | 81 |
| | 82 |
|
There was no material activity related to asset retirement obligations during either of the six months ended June 30, 2015 or 2014.
Interest
Cash payments related to interest were as follows: | | | | | | | | | | Six Months Ended
June 30, | In millions | 2015 | | 2014 | Interest payments | $ | 349 |
| | $ | 354 |
|
Amounts related to interest were as follows: | | | | | | | | | | | | | | | | | | Three Months Ended
June 30, | | Six Months Ended
June 30, | In millions | 2015 | | 2014 | | 2015 | | 2014 | Interest expense (a) | $ | 164 |
| | $ | 176 |
| | $ | 323 |
| | $ | 340 |
| Interest income (a) | 20 |
| | 12 |
| | 42 |
| | 33 |
| Capitalized interest costs | 7 |
| | 6 |
| | 14 |
| | 12 |
|
| | (a) | Interest expense and interest income exclude approximately $9 million and $18 million for the three months and six months ended June 30, 2015 and $9 million and $19 million for the three months and six months ended June 30, 2014, respectively related to investments in and borrowings from variable interest entities for which the Company has a legal right of offset (see Note 13). |
|