CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
CURRENT ASSETS
Cash and cash equivalents	$ 126	$ 128
Accounts receivable, less allowance of $152 and $162	1,943	1,988
Other	581	580
Total current assets	2,650	2,696
NET PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	38,785	36,718
Accumulated depreciation	(20,716)	(18,285)
Net property, plant and equipment	18,069	18,433
GOODWILL AND OTHER ASSETS
Goodwill	20,742	20,755
Other intangible assets, net	1,555	1,647
Other, net	660	679
Total goodwill and other assets	26,885	27,974
TOTAL ASSETS	47,604	49,103
CURRENT LIABILITIES
Current maturities of long-term debt	1,503	550
Accounts payable	968	1,226
Accrued expenses and other liabilities
Salaries and benefits	602	641
Income and other taxes	318	309
Interest	250	256
Other	220	210
Advance billings and customer deposits	743	726
Total current liabilities	4,604	3,918
LONG-TERM DEBT	18,722	19,953
DEFERRED CREDITS AND OTHER LIABILITIES
Deferred income taxes, net	3,569	3,154
Benefit plan obligations, net	5,511	5,808
Other	1,138	1,247
Total deferred credits and other liabilities	$ 10,218	$ 10,209
COMMITMENTS AND CONTINGENCIES (Note 14)
STOCKHOLDERS' EQUITY
Preferred stock — non-redeemable, $25.00 par value, authorized 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 543,800 and 568,517 shares	544	569
Additional paid-in capital	15,178	16,324
Accumulated other comprehensive loss	(1,934)	(2,017)
Retained earnings	272	147
Total stockholders' equity	14,060	15,023
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	47,604	49,103
Customer relationships, net
Finite lived intangible assets, net	$ 3,928	$ 4,893