PROPERTY, PLANT AND EQUIPMENT

12 Months Ended

Dec. 31, 2016

PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT

NOTE G. PROPERTY, PLANT AND EQUIPMENT

($ in millions)

At December 31:	2016		2015
Land and land improvements	$	506	$	558
Buildings and building improvements	6,326		6,552
Plant, laboratory and office equipment	22,318		21,116
Plant and other property—gross	29,150		28,226
Less: Accumulated depreciation	18,842		18,051
Plant and other property—net	10,308		10,176
Rental machines	984		1,115
Less: Accumulated depreciation	461		565
Rental machines—net	523		551
Total—net	$	10,830	$	10,727

In 2016, the company recorded a pre-tax impairment charge related to certain property, plant and equipment of $215 million. The remaining fair value of these assets is not material. There were no material pre-tax impairment charges related to property, plant and equipment in 2015.