CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
CURRENT ASSETS
Cash and cash equivalents	$ 354	$ 406
Accounts receivable, less allowance of $114 and $191	1,544	1,962
Assets held for sale	8,809	0
Other	829	808
Total current assets	11,536	3,176
Property, plant and equipment, net of accumulated depreciation of $19,271 and $31,596	20,895	26,338
GOODWILL AND OTHER ASSETS
Goodwill	15,986	18,870
Other intangible assets, net	6,970	8,219
Other, net	2,606	2,791
Total goodwill and other assets	25,562	29,880
TOTAL ASSETS	57,993	59,394
CURRENT LIABILITIES
Current maturities of long-term debt	1,554	2,427
Accounts payable	758	1,134
Accrued expenses and other liabilities
Salaries and benefits	860	1,008
Income and other taxes	228	314
Current operating lease liabilities	385	379
Interest	278	291
Other	232	328
Liabilities held for sale	2,257	0
Current portion of deferred revenue	617	753
Total current liabilities	7,169	6,634
LONG-TERM DEBT	27,428	29,410
DEFERRED CREDITS AND OTHER LIABILITIES
Deferred income taxes, net	4,049	3,342
Benefit plan obligations, net	3,710	4,556
Other	3,797	4,290
Total deferred credits and other liabilities	11,556	12,188
COMMITMENTS AND CONTINGENCIES (Note 18)
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 1,023,512 and 1,096,921 shares	1,024	1,097
Additional paid-in capital	18,972	20,909
Accumulated other comprehensive loss	(2,158)	(2,813)
Accumulated deficit	(5,998)	(8,031)
Total stockholders' equity	11,840	11,162
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 57,993	$ 59,394