CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 7,314	$ (923)
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	6,321	6,040
Bad debt expense	312	406
Share-based and long-term incentive compensation expense	137	57
Deferred income tax benefit	(6,707)	276
Gains from asset dispositions and exchanges	479	354
Call premiums paid on debt redemptions	129	0
Loss on early extinguishment of debt	65	0
Amortization and accretion of long-term debt premiums and discounts	(125)	(234)
Loss on Disposition of Property Plant Equipment	533	368
Gain (Loss) on Contract Termination	(5)	96
Other changes in assets and liabilities:
Accounts and notes receivable	(74)	(542)
Deferred purchase price from sale of receivables	0	(220)
Inventories and other current assets	(3,216)	(2,254)
Accounts payable and other current liabilities	(104)	(97)
Non-current assets and liabilities, net	260	(313)
Other, net	302	594
Net cash provided by operating activities	4,405	2,900
Cash flows from investing activities
Capital expenditures - network and other	(2,499)	(1,421)
Capital expenditures - leased devices	(1,787)	(1,530)
Expenditures relating to FCC licenses	(92)	(46)
Proceeds from sales and maturities of short-term investments	7,113	2,649
Purchases of short-term investments	(1,842)	(4,998)
Proceeds from sales of assets and FCC Licenses	367	126
Other, net	16	26
Net Cash Used in Investing Activities	1,276	(5,194)
Cash flows from financing activities
Proceeds from debt and financings	3,073	6,830
Repayments of debt and capital lease obligations	(7,159)	(3,266)
Debt financing costs	19	272
Other, net	(6)	68
Net cash provided by (used in) financing activities	(4,111)	3,360
Net decrease in cash and cash equivalents	1,570	1,066
Cash and cash equivalents, beginning of period	2,870	2,641
Cash and cash equivalents, end of period	$ 4,440	$ 3,707