CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	6 Months Ended	9 Months Ended	3 Months Ended
	Sep. 30, 2011	Sep. 30, 2012	Mar. 31, 2011 Predecessor
OPERATING ACTIVITIES
Net income	$ 19	$ 197	$ 211
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,598	2,206	533
Deferred income taxes	28	117	145
Provision for uncollectible accounts	38	73	19
Long-term debt (premium) discount amortization	(120)	(67)	6
Net loss on early retirement of debt	1	38
Changes in current assets and current liabilities:
Accounts receivable	(55)	(80)	61
Accounts payable	(24)	(51)	(71)
Accounts receivable and payable-affiliates, net	49	(307)
Accrued income and other taxes	(31)	(1)	31
Other current assets and other current liabilities, net	14	66	(117)
Changes in other noncurrent assets-affiliate		(4)
Changes in other noncurrent assets and liabilities	10	(176)	(53)
Other, net	17	6	12
Net cash provided by operating activities	1,544	2,017	777
INVESTING ACTIVITIES
Payments for property, plant and equipment and capitalized software	(748)	(1,121)	(410)
Changes in advances to affiliates	(1,145)	(28)
Proceeds from sale of property		133
Other, net	3		2
Net cash used in investing activities	(1,890)	(1,016)	(408)
FINANCING ACTIVITIES
Net proceeds from issuance of long-term debt	1,200	896
Payments of long-term debt	(877)	(2,761)	(203)
Early retirement of debt costs	(13)	(178)
Dividends paid	(300)	(750)	(141)
Changes in notes payable-affiliates		1,985
Changes in accounts payable-affiliates		(187)
Other, net	(18)		27
Net cash used in financing activities	(8)	(995)	(317)
Net increase (decrease) in cash and cash equivalents	(354)	6	52
Cash and cash equivalents at beginning of period	424	48	372
Cash and cash equivalents at end of period	70	54	424
Supplemental cash flow information:
Income taxes (paid) refunded, net	10	(1)	1
Interest (paid) (net of capitalized interest of $19, $8 and $5)	$ (427)	$ (585)	$ (236)