CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
CURRENT ASSETS
Cash and cash equivalents	$ 526	$ 1,690
Accounts receivable, less allowance of $156 and $106	2,143	2,259
Other	835	819
Total current assets	3,504	4,768
Property, plant and equipment, net of accumulated depreciation of $30,921 and $29,346	26,290	26,079
GOODWILL AND OTHER ASSETS
Goodwill	21,476	21,534
Other intangible assets, net	8,563	9,567
Other, net	2,766	2,794
Total goodwill and other assets	32,805	33,895
TOTAL ASSETS	62,599	64,742
CURRENT LIABILITIES
Current maturities of long-term debt	1,487	2,300
Accounts payable	1,364	1,724
Accrued expenses and other liabilities
Salaries and benefits	898	1,037
Income and other taxes	378	311
Current operating lease liabilities	401	416
Interest	278	280
Other	335	386
Current portion of deferred revenue	738	804
Total current liabilities	5,879	7,258
LONG-TERM DEBT	31,105	32,394
DEFERRED CREDITS AND OTHER LIABILITIES
Deferred income taxes, net	3,232	2,918
Benefit plan obligations, net	4,345	4,594
Other	4,349	4,108
Total deferred credits and other liabilities	11,926	11,620
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 2,200,000 and 2,200,000 shares, issued and outstanding 1,097,237 and 1,090,058 shares	1,097	1,090
Additional paid-in capital	21,130	21,874
Accumulated other comprehensive loss	(2,795)	(2,680)
Accumulated deficit	(5,743)	(6,814)
Total stockholders' equity	13,689	13,470
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 62,599	$ 64,742