CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, unless otherwise specified	9 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2011	Mar. 31, 2011 Predecessor	Dec. 31, 2010 Predecessor	Dec. 31, 2009 Predecessor
OPERATING REVENUES
Operating revenues	$ 5,419	$ 1,870	$ 7,700	$ 8,075
Operating revenues-affiliates	1,216	398	1,571	1,656
Total operating revenues	6,635	2,268	9,271	9,731
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	1,833	626	2,585	2,796
Selling, general and administrative	1,499	501	2,136	2,222
Operating expenses-affiliates	238	52	194	175
Depreciation and amortization	1,866	451	1,873	1,976
Total operating expenses	5,436	1,630	6,788	7,169
OPERATING INCOME	1,199	638	2,483	2,562
OTHER INCOME (EXPENSE)
Interest expense	(299)	(150)	(615)	(632)
Other income (expense)	(8)	2	5	(9)
Total other income (expense)	(307)	(148)	(610)	(641)
INCOME BEFORE INCOME TAX EXPENSE	892	490	1,873	1,921
Income tax expense	349	191	791	724
NET INCOME	$ 543	$ 299	$ 1,082	$ 1,197