CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
CURRENT ASSETS
Cash and cash equivalents	$ 140	$ 126
Accounts receivable, less allowance of $173 and $152	1,957	1,943
Other	631	581
Total current assets	2,728	2,650
NET PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	40,304	38,785
Accumulated depreciation	(22,464)	(20,716)
Net property, plant and equipment	17,840	18,069
GOODWILL AND OTHER ASSETS
Goodwill	20,766	20,742
Other intangible assets, less accumulated amortization of $1,980 and $1,798	1,518	1,555
Other, net	690	660
Total goodwill and other assets	26,228	26,885
TOTAL ASSETS	46,796	47,604
CURRENT LIABILITIES
Current maturities of long-term debt	1,534	1,503
Accounts payable	1,036	968
Accrued expenses and other liabilities
Salaries and benefits	548	602
Income and other taxes	330	318
Interest	320	250
Other	255	220
Advance billings and customer deposits	710	743
Total current liabilities	4,733	4,604
LONG-TERM DEBT	18,184	18,722
DEFERRED CREDITS AND OTHER LIABILITIES
Deferred income taxes, net	3,653	3,569
Benefit plan obligations, net	5,228	5,511
Other	1,106	1,138
Total deferred credits and other liabilities	9,987	10,218
COMMITMENTS AND CONTINGENCIES (Note 8)
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 546,690 and 543,800 shares	547	544
Additional paid-in capital	15,121	15,178
Accumulated other comprehensive loss	(1,855)	(1,934)
Retained earnings	79	272
Total stockholders' equity	13,892	14,060
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	46,796	47,604
Customer relationships
Customer relationships, less accumulated amortization of $6,322 and $5,648	$ 3,254	$ 3,928