CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
OPERATING ACTIVITIES
Net income	$ 200	$ 211
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,208	369
Deferred income taxes	115	40
Provision for uncollectible accounts	56	20
Long-term debt (premium) discount amortization	(28)
Changes in current assets and current liabilities:
Accounts receivable	18	25
Accounts payable	(198)	(1)
Accrued income and other taxes	80	96
Other current assets and other current liabilities, net	156	32
Retirement benefits	(75)	(110)
Changes in other noncurrent assets and liabilities	47	(15)
Other, net	4	3
Net cash provided by operating activities	1,583	670
INVESTING ACTIVITIES
Payments for property, plant and equipment and capitalized software	(678)	(211)
Other, net	15	3
Net cash used in investing activities	(663)	(208)
FINANCING ACTIVITIES
Net proceeds from issuance of long-term debt	2,032
Payments of long-term debt	(849)	(3)
Net payments on credit facility	(277)	(145)
Dividends paid	(452)	(222)
Net proceeds from issuance of common stock	35	19
Repurchase of common stock	(11)	(15)
Other, net	3	1
Net cash provided by (used in) financing activities	481	(365)
Effect of exchange rate changes on cash and cash equivalents	1
Net increase in cash and cash equivalents	1,402	97
Cash and cash equivalents at beginning of period	128	173
Cash and cash equivalents at end of period	1,530	270
Supplemental cash flow information:
Income taxes paid, net	(1)	(5)
Interest paid (net of capitalized interest of $9 and $3)	$ (244)	$ (70)