CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended		0 Months Ended	3 Months Ended
	Sep. 30, 2014 Successor [Member]	Sep. 30, 2013 Successor [Member]	Sep. 30, 2014 Successor [Member]	Sep. 30, 2013 Successor [Member]	Jul. 10, 2013 Predecessor [Member]	Jul. 10, 2013 Predecessor [Member]
Net operating revenues	$ 8,488	$ 7,749	$ 17,277	$ 7,749	$ 932	$ 9,809
Net operating expenses
Cost of services and products (exclusive of depreciation and amortization included below)	4,801	4,342	9,479	4,342	567	5,612
Selling, general and administrative	2,301	2,259	4,585	2,281	289	2,731
Severance and exit costs	284	103	311	103	(5)	627
Depreciation	898	942	1,766	942	113	1,676
Amortization	396	461	809	461	8	77
Total costs and expenses	8,680	8,107	16,950	8,129	972	10,723
Operating Income (Loss)	(192)	(358)	327	(380)	(40)	(914)
Other (expense) income
Interest Expense	(510)	(416)	(1,022)	(416)	(275)	(703)
Equity in losses of unconsolidated investments, net	0	0	0	0	(23)	(280)
Gain on previously-held equity interests	0	0	0	0	2,926	2,926
Other income (expense), net	8	165	9	12	2	19
Nonoperating Income (Expense)	(502)	(251)	(1,013)	(404)	2,630	1,962
Loss (income) before income taxes	(694)	(609)	(686)	(784)	2,590	1,048
Income tax expense	(71)	(90)	(56)	(29)	(1,508)	(1,563)
Net (loss) income	(765)	(699)	(742)	(813)	1,082	(515)
Basic net (loss) income per common share	$ (0.19)	$ (0.18)	$ (0.19)	$ (0.24)	$ 0.35	$ (0.17)
Diluted net (loss) income per common share	$ (0.19)	$ (0.18)	$ (0.19)	$ (0.24)	$ 0.30	$ (0.17)
Basic weighted average common shares outstanding	3,949	3,802	3,947	3,439	3,086	3,038
Diluted weighted average common shares outstanding	3,949	3,802	3,947	3,439	3,640	3,038
Other comprehensive (loss) income, net of tax:
Net unrealized holding gains (losses) on securities and other	(6)	4	(6)	100	(47)	(11)
Net unrecognized net periodic pension and other postretirement benefits	(1)	0	(1)	0	5	20
Other comprehensive income (loss)	(7)	4	(7)	100	(42)	9
Comprehensive (loss) income	$ (772)	$ (695)	$ (749)	$ (713)	$ 1,040	$ (506)