CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
CURRENT ASSETS
Cash and cash equivalents	$ 441	$ 488
Restricted cash	3	4
Accounts receivable, less allowance of $156 and $142	2,347	2,398
Assets held for sale	3	12
Other	1,026	918
Total current assets	3,820	3,820
Property, plant and equipment, net of accumulated depreciation of $27,385 and $26,859	25,793	26,408
GOODWILL AND OTHER ASSETS
Goodwill	21,526	28,031
Operating lease assets	1,952
Restricted cash	30	26
Customer relationships, net	8,580	8,911
Other intangibles, net	1,929	1,868
Other, net	1,158	1,192
Total goodwill and other assets	35,175	40,028
TOTAL ASSETS	64,788	70,256
CURRENT LIABILITIES
Current maturities of long-term debt	632	652
Accounts payable	1,481	1,933
Accrued expenses and other liabilities
Salaries and benefits	823	1,104
Income and other taxes	386	337
Current operating lease liabilities	561
Interest	352	316
Other	297	357
Current portion of deferred revenue	841	832
Total current liabilities	5,373	5,531
LONG-TERM DEBT	34,858	35,409
DEFERRED CREDITS AND OTHER LIABILITIES
Deferred income taxes, net	2,701	2,527
Benefit plan obligations, net	4,265	4,319
Noncurrent operating lease liabilities	1,501
Other	2,547	2,642
Total deferred credits and other liabilities	11,014	9,488
COMMITMENTS AND CONTINGENCIES (Note 12)
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 1,090,445 and 1,080,167 shares	1,090	1,080
Additional paid-in capital	22,575	22,852
Accumulated other comprehensive loss	(2,429)	(2,461)
Accumulated deficit	(7,693)	(1,643)
Total stockholders' equity	13,543	19,828
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 64,788	$ 70,256