SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION Footnote

9 Months Ended

Sep. 30, 2019

Disclosure Text Block Supplement [Abstract]

Supplemental Financial Statement Information [Note Text Block]

Temporary Investments 

Temporary investments with an original maturity of three months or less are treated as cash equivalents and are stated at cost. Temporary investments totaled $484 million and $402 million at September 30, 2019 and December 31, 2018, respectively.

Accounts and Notes Receivable

In millions	September 30, 2019		December 31, 2018
Accounts and notes receivable, net:
Trade	$	3,055	$	3,249
Other	250		272
Total	$	3,305	$	3,521

The allowance for doubtful accounts was $77 million and $81 million at September 30, 2019 and December 31, 2018, respectively.

Inventories 

In millions	September 30, 2019		December 31, 2018
Raw materials	$	270	$	260
Finished pulp, paper and packaging	1,140		1,241
Operating supplies	637		641
Other	147		99
Total	$	2,194	$	2,241

Plants, Properties and Equipment  

Accumulated depreciation was $20.4 billion and $20.5 billion at September 30, 2019 and December 31, 2018, respectively. Depreciation expense was $305 million and $315 million for the three months ended September 30, 2019 and 2018, respectively, and $902 million and $930 million for the nine months ended September 30, 2019 and 2018, respectively.

Non-cash additions to plants, property and equipment included within accounts payable were $104 million and $135 million at September 30, 2019 and December 31, 2018, respectively.

Interest

Interest payments made during the nine months ended September 30, 2019 and 2018 were $591 million and $606 million, respectively.

Amounts related to interest were as follows: 

	Three Months Ended September 30,				Nine Months Ended September 30,
In millions	2019		2018		2019		2018
Interest expense	$	177	$	184	$	538	$	547
Interest income	54		51		160		146
Capitalized interest costs	7		9		21		26

Asset Retirement Obligations

The Company had recorded liabilities of $95 million and $86 million related to asset retirement obligations at September 30, 2019 and December 31, 2018, respectively.