CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
OPERATING ACTIVITIES
Net income	$ 396	$ 567
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,200	2,240
Impairment of assets	32	0
Deferred income taxes	208	307
Provision for uncollectible accounts	63	65
Gain on sale of intangible assets	0	(32)
Net long-term debt premium amortization	(21)	(32)
Changes in current assets and current liabilities:
Accounts receivable	(72)	(48)
Accounts payable	75	123
Accrued income and other taxes	(11)	(11)
Other current assets and other current liabilities, net	(356)	(163)
Retirement benefits	(102)	(220)
Changes in other noncurrent assets and liabilities, net	66	48
Other, net	31	12
Net cash provided by operating activities	2,509	2,856
INVESTING ACTIVITIES
Payments for property, plant and equipment and capitalized software	(1,401)	(1,410)
Proceeds from sale of intangible assets or property	0	75
Other, net	(18)	23
Net cash used in investing activities	(1,419)	(1,312)
FINANCING ACTIVITIES
Net proceeds from issuance of long-term debt	0	1,740
Repayments of Long-term Debt	(121)	(1,018)
Net borrowings (payments) on credit facility	120	(775)
Dividends paid	(616)	(661)
Net proceeds from issuance of common stock	32	40
Repurchase of common stock	(493)	(867)
Other, net	1	0
Net cash used in financing activities	(1,077)	(1,541)
Net increase in cash and cash equivalents	13	3
Cash and cash equivalents at beginning of period	168	211
Cash and cash equivalents at end of period	181	214
Supplemental cash flow information:
Income taxes (paid), net	(23)	(46)
Interest (paid) (net of capitalized interest of $22 and $18)	$ (672)	$ (647)