CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2012	Mar. 31, 2011 Predecessor	Dec. 31, 2010 Predecessor
OPERATING REVENUES
Operating revenues	$ 5,419	$ 7,031	$ 1,870	$ 7,700
Operating revenues-affiliates	1,216	1,817	398	1,571
Total operating revenues	6,635	8,848	2,268	9,271
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	2,171	2,868	742	3,069
Selling, general and administrative	1,161	1,166	385	1,652
Operating expenses-affiliates	238	619	52	194
Depreciation and amortization	1,866	2,290	451	1,873
Total operating expenses	5,436	6,943	1,630	6,788
OPERATING INCOME	1,199	1,905	638	2,483
OTHER INCOME (EXPENSE)
Interest expense	(300)	(443)	(150)	(615)
Interest (expense) income - affiliates	1	(24)
Net loss on early retirement of debt	(8)	(47)
Other income			2	5
Total other income (expense)	(307)	(514)	(148)	(610)
INCOME BEFORE INCOME TAX EXPENSE	892	1,391	490	1,873
Total deferred tax expense (benefit)	349	542	191	791
NET INCOME	$ 543	$ 849	$ 299	$ 1,082