NOTE 9 - SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION

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 $753 million and $757 million at June 30, 2017 and December 31, 2016, respectively.

Accounts and Notes Receivable



In millions	June 30, 2017		December 31, 2016
Accounts and notes receivable, net:
Trade	$	2,996	$	2,759
Other	287		242
Total	$	3,283	$	3,001

The allowance for doubtful accounts was $71 million and $70 million at June 30, 2017 and December 31, 2016, respectively.

Inventories



In millions	June 30, 2017		December 31, 2016
Raw materials	$	294	$	296
Finished pulp, paper and packaging	1,351		1,381
Operating supplies	624		661
Other	92		100
Total	$	2,361	$	2,438

Depreciation

Accumulated depreciation was $22.3 billion and $21.6 billion at June 30, 2017 and December 31, 2016. Depreciation expense was $332 million and $284 million for the three months ended June 30, 2017 and 2016, respectively, and $656 million and $551 million for the six months ended June 30, 2017 and 2016, respectively.

Interest

Interest payments made during the six months ended June 30, 2017 and 2016 were $387 million and $333 million, respectively.

Amounts related to interest were as follows:



	Three Months Ended June 30,				Six Months Ended June 30,
In millions	2017		2016		2017		2016
Interest expense	$	186	$	172	$	373	$	332
Interest income	49		43		94		80
Capitalized interest costs	6		7		12		14