CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
CURRENT ASSETS
Cash and cash equivalents	$ 390	$ 551
Restricted cash and securities	3	5
Accounts receivable, less allowance of $153 and $164	2,465	2,557
Assets held for sale	19	140
Other	1,237	941
Total current assets	4,114	4,194
Property, plant and equipment, net of accumulated depreciation of $26,493 and $24,352	26,168	26,852
GOODWILL AND OTHER ASSETS
Goodwill	30,770	30,475
Restricted cash and securities	27	31
Customer relationships, net	9,309	10,876
Other intangibles, net	1,857	1,897
Other, net	1,126	1,286
Total goodwill and other assets	43,089	44,565
TOTAL ASSETS	73,371	75,611
CURRENT LIABILITIES
Current maturities of long-term debt	778	443
Accounts payable	1,387	1,555
Accrued expenses and other liabilities
Salaries and benefits	993	890
Income and other taxes	409	370
Interest	362	363
Other	374	344
Current portion of deferred revenue	983	892
Total current liabilities	5,286	4,857
LONG-TERM DEBT	35,749	37,283
DEFERRED CREDITS AND OTHER LIABILITIES
Deferred income taxes, net	2,502	2,413
Benefit plan obligations, net	4,392	5,178
Other	2,639	2,389
Total deferred credits and other liabilities	9,533	9,980
COMMITMENTS AND CONTINGENCIES (Note 12)
STOCKHOLDERS' EQUITY
Preferred stock—non-redeemable, $25 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 1,080,573 and 1,069,169 shares	1,081	1,069
Additional paid-in capital	23,399	23,314
Accumulated other comprehensive loss	(2,454)	(1,995)
Retained earnings	777	1,103
Total stockholders' equity	22,803	23,491
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 73,371	$ 75,611