CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2013
Revenue, Net [Abstract]
Service	$ 7,037	$ 7,683
Equipment	990	1,106
Net operating revenues	8,027	8,789
Net operating expenses
Cost of Services (exclusive of depreciation and amortization included below)	2,393	2,520
Cost of Products (exclusive of depreciation and amortization included below)	1,365	2,158
Selling, general and administrative	2,187	2,284
Depreciation	1,241	868
Amortization	347	413
Other, net	(7)	27
Total costs and expenses	7,526	8,270
Operating Income	501	519
Other (expense) income
Interest Expense	(542)	(512)
Other income, net	4	1
Nonoperating Expense	(538)	(511)
Loss (income) before income taxes	(37)	8
Income tax benefit	17	15
Net (loss) income	$ (20)	$ 23
Basic net (loss) income per common share	$ (0.01)	$ 0.01
Diluted net (loss) income per common share	$ (0.01)	$ 0.01
Basic weighted average common shares outstanding	3,967	3,945
Diluted weighted average common shares outstanding	3,967	4,002
Other comprehensive (loss) income, net of tax:
Net unrealized holding gains on securities and other	$ 2		$ 0
Net unrecognized net periodic pension and other postretirement benefits	2		$ 0
Other comprehensive income	4	$ 0
Comprehensive (loss) income	$ (16)	$ 23