CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
CURRENT ASSETS
Cash and cash equivalents	$ 551	$ 222
Restricted cash - current	5	0
Accounts receivable, less allowance of $164 and $178	2,557	2,017
Assets held for sale	140	2,376
Other	941	547
Total current assets	4,194	5,162
NET PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	51,204	39,194
Accumulated depreciation	(24,352)	(22,155)
Net property, plant and equipment	26,852	17,039
GOODWILL AND OTHER ASSETS
Goodwill	30,475	19,650
Restricted cash	31	2
Other intangible assets, net	1,897	1,531
Other, net	1,286	836
Total goodwill and other assets	44,565	24,816
TOTAL ASSETS	75,611	47,017
CURRENT LIABILITIES
Current maturities of long-term debt	443	1,503
Accounts payable	1,555	1,179
Accrued expenses and other liabilities
Salaries and benefits	890	802
Income and other taxes	370	301
Interest	363	260
Other	344	213
Current liabilities associated with assets held for sale	0	419
Advance billings and customer deposits	892	672
Total current liabilities	4,857	5,349
LONG-TERM DEBT	37,283	18,185
DEFERRED CREDITS AND OTHER LIABILITIES
Deferred income taxes, net	2,413	3,471
Benefit plan obligations, net	5,178	5,527
Other	2,389	1,086
Total deferred credits and other liabilities	9,980	10,084
COMMITMENTS AND CONTINGENCIES (Note 16)
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 1,069,169 and 546,545 shares	1,069	547
Additional paid-in capital	23,314	14,970
Accumulated other comprehensive loss	(1,995)	(2,117)
Retained earnings (accumulated deficit)	1,103	(1)
Total stockholders' equity	23,491	13,399
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	75,611	47,017
Customer relationships
Customer relationships, net	$ 10,876	$ 2,797