CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
CURRENT ASSETS
Cash and cash equivalents	$ 191	$ 126
Accounts receivable, less allowance of $160 and $152	1,972	1,943
Other	628	581
Total current assets	2,791	2,650
NET PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	39,763	38,785
Accumulated depreciation	(21,869)	(20,716)
Net property, plant and equipment	17,894	18,069
GOODWILL AND OTHER ASSETS
Goodwill	20,766	20,742
Other intangible assets, less accumulated amortization of $1,901 and $1,798	1,506	1,555
Other, net	689	660
Total goodwill and other assets	26,433	26,885
TOTAL ASSETS	47,118	47,604
CURRENT LIABILITIES
Current maturities of long-term debt	1,451	1,503
Accounts payable	1,067	968
Accrued expenses and other liabilities
Salaries and benefits	562	602
Income and other taxes	505	318
Interest	258	250
Other	272	220
Advance billings and customer deposits	727	743
Total current liabilities	4,842	4,604
LONG-TERM DEBT	18,165	18,722
DEFERRED CREDITS AND OTHER LIABILITIES
Deferred income taxes, net	3,625	3,569
Benefit plan obligations, net	5,390	5,511
Other	1,111	1,138
Total deferred credits and other liabilities	10,126	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 545,924 and 543,800 shares	546	544
Additional paid-in capital	15,205	15,178
Accumulated other comprehensive loss	(1,881)	(1,934)
Retained earnings	115	272
Total stockholders' equity	13,985	14,060
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	47,118	47,604
Customer relationships
Customer relationships, less accumulated amortization of $6,104 and $5,648	$ 3,472	$ 3,928