Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]	0000040545 (http://www.sec.gov/CIK)
Legal Entity [Axis]	Entity [Domain]

Inventory	Period [Axis]
	2016-12-31		2015-12-31
	Business Acquisition [Axis]		Business Acquisition [Axis]
	Alstom Acquisition	Business Acquisition, Acquiree [Domain]	Business Acquisition, Acquiree [Domain]
Raw materials and work in process		12,636,000,000	13,415,000,000
Finished goods		8,798,000,000	8,265,000,000
Unbilled shipments		536,000,000	628,000,000
Inventory, Gross, Total		21,971,000,000	22,308,000,000
Revaluation to LIFO		383,000,000	207,000,000
Total inventories	4,298,000,000	22,354,000,000	22,515,000,000
Percentage of LIFO Inventory
Year over year variance