CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows provided by (used in) operating activities:
Net income	$ 52,489	$ 90,040
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	664,347	710,243
Stock based compensation expense	7,775	7,677
Pension/OPEB costs	27,853	16,560
Losses on early extinguishment of debt	70,818	0
Other non-cash adjustments	8,386	(6,735)
Deferred income taxes	27,158	51,133
Change in accounts receivable	31,696	29,705
Change in accounts payable and other liabilities	(136,003)	(49,414)
Change in prepaid expenses, income taxes and other current assets	3,274	15,022
Net cash provided by operating activities	757,793	864,231
Cash flows provided from (used by) investing activities:
Capital expenditures - Business operations	(376,073)	(414,039)
Capital expenditures - Integration activities	(27,940)	(18,986)
Cash transferred from escrow	39,089	12,364
Other assets purchased and distributions received, net	(12,085)	(7,289)
Net cash used by investing activities	(377,009)	(427,950)
Cash flows provided from (used by) financing activities:
Long-term debt borrowings	500,000	0
Financing costs paid	(10,288)	0
Long-term debt payments	(536,968)	(78,024)
Premium paid to retire debt	(52,078)	0
Dividends paid	(199,702)	(373,215)
Repayment of customer advances for construction, distributions to noncontrolling interests and other	2,172	(3,633)
Net cash used by financing activities	(296,864)	(454,872)
Increase/(Decrease) in cash and cash equivalents	83,920	(18,591)
Cash and cash equivalents at January 1,	326,094	251,263
Cash and cash equivalents at June 30,	410,014	232,672
Cash paid (received) during the period for:
Interest	328,771	328,728
Income taxes (refunds)	$ (208)	$ 27,203