CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ (1,943)	$ 7,377	$ (1,206)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Impairments	2,000	0	0
Depreciation and amortization	9,391	8,580	8,150
Provision for losses on accounts receivable	394	362	555
Share-based and long-term incentive compensation expense	132	182	93
Deferred income tax (benefit) expense	(85)	(7,119)	433
Gains from asset dispositions and exchanges	0	479	354
Loss on early extinguishment of debt	0	65	0
Amortization and accretion of long-term debt premiums and discounts	(112)	(158)	(302)
Loss on disposal of property, plant and equipment	1,135	868	509
Litigation and other contingencies	74	(13)	140
Contract terminations	0	(5)	111
Deferred purchase price from sale of receivables	(223)	(1,140)	(10,498)
Other changes in assets and liabilities:
Accounts and notes receivable	(150)	83	(1,017)
Inventories and other current assets	279	705	457
Accounts payable and other current liabilities	(142)	57	(365)
Non-current assets and liabilities, net	(728)	271	(308)
Other, net	407	426	312
Net cash provided by (used in) operating activities	10,429	10,062	(3,290)
Cash flows from investing activities:
Capital expenditures - network and other	(4,963)	(3,319)	(1,950)
Capital expenditures - leased devices	(7,441)	(7,461)	(4,976)
Expenditures relating to FCC licenses	(163)	(115)	(83)
Proceeds from sales and maturities of short-term investments	7,197	7,202	4,621
Purchases of short-term investments	(5,165)	(4,112)	(10,065)
Proceeds from sale of assets and FCC licenses	591	527	219
Proceeds from Sale and Collection of Receivables	223	1,140	10,498
Proceeds from Life Insurance Policy	110	2	11
Other, net	69	1	30
Net cash used in investing activities	(9,542)	(6,135)	(1,695)
Cash flows from financing activities:
Proceeds from debt and financings	9,307	8,529	10,966
Repayments of debt, financing and capital lease obligations	(9,764)	(8,518)	(5,417)
Debt financing costs	(321)	(93)	(358)
Call premiums paid on debt redemptions	0	131	0
Proceeds from issuance of common stock and warrants, net	291	21	50
Other, net	4	(18)	45
Net cash provided by (used in) financing activities	(483)	(210)	5,286
Net increase (decrease) in cash, cash equivalents and restricted cash	404	3,717	301
Cash, cash equivalents and restricted cash, beginning of period	6,659	2,942	2,641
Cash, cash equivalents and restricted cash, end of period	$ 7,063	$ 6,659	$ 2,942