Property, Plant And Equipment (Tables)

9 Months Ended

Sep. 30, 2017

Property, Plant And Equipment [Abstract]

Property, Plant And Equipment, Net

($ in millions)	September 30, 2017		December 31, 2016
Property, plant and equipment	$	26,124	$	25,541
Less:  Accumulated depreciation		(11,749)		(10,639)
Property, plant and equipment, net	$	14,375	$	14,902

Schedule Of Depreciation Expense

	For the three months ended September 30,				For the nine months ended September 30,
($ in millions)	2017		2016		2017		2016
Depreciation expense	$	376	$	323	$	1,131	$	1,009