Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2017	Mar. 31, 2017	[1]
Assets, Current [Abstract]
Cash and cash equivalents	$ 2,306	$ 4,247
Accounts receivable, net	468	649
Other current assets	399	428
Total current assets	3,173	5,324
Property and equipment, net	895	937
Intangible assets, net	2,892	3,004
Goodwill	8,638	8,627
Equity investments	158	158
Other long-term assets	112	124
Total assets	15,868	18,174
Current liabilities:
Accounts payable	121	180
Accrued compensation and benefits	206	272
Current portion of long-term debt	0	1,310
Deferred revenue	2,329	2,353
Income taxes payable	22	30
Other current liabilities	443	477
Total current liabilities	3,121	4,622
Long-term debt	6,202	6,876
Long-term deferred revenue	465	434
Deferred income tax liabilities	2,332	2,401
Long-term income taxes payable	261	251
Other long-term obligations	98	103
Total liabilities	12,479	14,687
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.01 par value: 1,000 shares authorized; 21 shares issued; 0 outstanding	0	0
Common stock and additional paid-in capital, $0.01 par value: 3,000,000 shares authorized; 610,991 and 608,019 shares issued and outstanding, respectively	4,273	4,236
Accumulated other comprehensive income	10	12
Accumulated deficit	(894)	(761)
Total stockholders’ equity	3,389	3,487
Total liabilities and stockholders’ equity	$ 15,868	$ 18,174

[1] Derived from audited financial statements.