CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows provided by (used in) operating activities:
Net income	$ 90,040	$ 79,411
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	710,243	201,023
Stock based compensation expense	7,677	5,228
Pension/OPEB costs	16,560	12,159
Other non-cash adjustments	(6,735)	(3,423)
Deferred income taxes	51,133	6,236
Change in accounts receivable	29,705	(6,537)
Change in accounts payable and other liabilities	(49,414)	(24,751)
Change in prepaid expenses, income taxes and other current assets	15,022	48,224
Net cash provided by operating activities	864,231	317,570
Cash flows provided from (used by) investing activities:
Capital expenditures - Business operations	(414,039)	(93,350)
Capital expenditures - Integration activities	(18,986)	(62,353)
Transaction escrow	0	(125,518)
Other assets purchased and distributions received, net	5,075	(134)
Net cash used by investing activities	(427,950)	(281,355)
Cash flows provided from (used by) financing activities:
Long-term debt payments	(78,024)	(1,955)
Dividends paid	(373,215)	(156,706)
Financing costs paid	0	(3,225)
Repayment of customer advances for construction, distributions to noncontrolling interests and other	(3,633)	(1,867)
Net cash used by financing activities	(454,872)	(163,753)
Decrease in cash and cash equivalents	(18,591)	(127,538)
Cash and cash equivalents - beginning of period	251,263	358,693
Cash and cash equivalents - end of period	232,672	231,155
Cash paid during the period for:
Interest	328,728	180,863
Income taxes (refunds)	$ 27,203	$ (805)