CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
CURRENT ASSETS
Cash and cash equivalents	$ 342	$ 222
Accounts receivable, less allowance of $174 and $178	1,868	2,017
Assets held for sale	7	2,376
Other	691	547
Total current assets	2,908	5,162
NET PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	40,744	39,194
Accumulated depreciation	(23,161)	(22,155)
Net property, plant and equipment	17,583	17,039
GOODWILL AND OTHER ASSETS
Goodwill	19,639	19,650
Restricted cash	6,015	2
Other intangible assets, less accumulated amortization of $2,176 and $2,042	1,556	1,531
Other, net	823	836
Total goodwill and other assets	30,434	24,816
TOTAL ASSETS	50,925	47,017
CURRENT LIABILITIES
Current maturities of long-term debt	196	1,503
Accounts payable	944	1,179
Accrued expenses and other liabilities
Salaries and benefits	669	802
Income and other taxes	290	301
Interest	262	260
Other	238	213
Current liabilities associated with assets held for sale	0	419
Advance billings and customer deposits	644	672
Total current liabilities	3,243	5,349
LONG-TERM DEBT	24,881	18,185
DEFERRED CREDITS AND OTHER LIABILITIES
Deferred income taxes, net	3,230	3,471
Benefit plan obligations, net	5,362	5,527
Other	1,123	1,086
Total deferred credits and other liabilities	9,715	10,084
COMMITMENTS AND CONTINGENCIES (Note 10)
STOCKHOLDERS' EQUITY
Preferred stock—non-redeemable, $25.00 par value, authorized 2,000 and 2,000 shares, issued and outstanding 7 and 7 shares	0	0
Common stock, $1.00 par value, authorized 1,600,000 and 1,600,000 shares, issued and outstanding 549,743 and 546,545 shares	550	547
Additional paid-in capital	14,637	14,970
Accumulated other comprehensive loss	(2,050)	(2,117)
Accumulated deficit	(51)	(1)
Total stockholders' equity	13,086	13,399
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	50,925	47,017
Customer relationships
Customer relationships, less accumulated amortization of $6,716 and $6,318	$ 2,401	$ 2,797