Supplemental Balance Sheet Data

The following schedule presents a summary of inventories by major class:



	March 31, 2014								December 31, 2013
	LIFO			Non-LIFO		Total			LIFO			Non-LIFO		Total
At the lower of cost, determined on the FIFO or weighted-average cost methods, or market
Raw materials	$	147		$	331	$	478		$	143		$	319	$	462
Work in process	190			101		291			189			97		286
Finished goods	669			770		1,439			648			753		1,401
Supplies and other	—			328		328			—			326		326
	1,006			1,530		2,536			980			1,495		2,475
Excess of FIFO or weighted-average cost over LIFO cost	(251		)	—		(251		)	(242		)	—		(242		)
Total	$	755		$	1,530	$	2,285		$	738		$	1,495	$	2,233

We use the LIFO method of valuing inventory for financial reporting purposes for most U.S. inventories. Interim LIFO calculations are based on management's estimates of expected year-end inventory levels and costs. An actual valuation of inventory under the LIFO method is made at the end of each year based on the inventory levels and costs at that time.

The following schedule presents a summary of property, plant and equipment, net:



	March 31, 2014			December 31, 2013
Land	$	192		$	196
Buildings	2,753			2,776
Machinery and equipment	14,296			14,193
Construction in progress	474			515
	17,715			17,680
Less accumulated depreciation	(9,874		)	(9,732		)
Total	$	7,841		$	7,948