CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
CURRENT ASSETS
Cash and cash equivalents	$ 214	$ 211
Accounts receivable, less allowance of $147 and $158	1,900	1,917
Income tax receivable	58	42
Deferred income taxes, net	906	891
Other	570	552
Total current assets	3,648	3,613
NET PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment	33,204	32,086
Accumulated depreciation	(14,427)	(13,054)
Net property, plant and equipment	18,777	19,032
GOODWILL AND OTHER ASSETS
Goodwill	21,744	21,732
Customer relationships, less accumulated amortization of $3,094 and $2,524	6,482	7,052
Other intangible assets, less accumulated amortization of $1,139 and $956	1,762	1,795
Other	841	796
Total goodwill and other assets	30,829	31,375
TOTAL ASSETS	53,254	54,020
CURRENT LIABILITIES
Current maturities of long-term debt	302	1,205
Accounts payable	1,285	1,207
Accrued expenses and other liabilities
Salaries and benefits	584	683
Income and other taxes	366	356
Interest	286	268
Other	259	234
Advance billings and customer deposits	666	642
Total current liabilities	3,748	4,595
LONG-TERM DEBT	20,283	19,400
DEFERRED CREDITS AND OTHER LIABILITIES
Deferred income taxes, net	3,980	3,644
Benefit plan obligations, net	5,578	5,844
Other	1,265	1,248
Total deferred credits and other liabilities	10,823	10,736
COMMITMENTS AND CONTINGENCIES (Note 9)
STOCKHOLDERS' EQUITY
Preferred stock-non-redeemable, $25.00 par value, authorized 2,000 shares, issued and outstanding 7 and 7 shares
Common stock, $1.00 par value, authorized 1,600,000 and 1,600,000 shares, respectively, issued and outstanding 604,209 and 625,658 shares	604	626
Additional paid-in capital	18,291	19,079
Accumulated other comprehensive income (loss)	(1,688)	(1,701)
Retained earnings	1,193	1,285
Total stockholders' equity	18,400	19,289
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 53,254	$ 54,020