Consolidated Balance Sheets Detail - Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
Feb. 29, 2020	Feb. 28, 2019	Feb. 28, 2018
Finite-Lived Intangible Assets [Line Items]
Cost	$ 2,002	$ 1,980
Accumulated Amortization	1,087	912
Net Book Value	915	1,068
Amortization expenses related to intangible assets	188	129	$ 141
Intangible assets acquired during the period	32	725
Intangible Assets Acquired, related to Cylance		646
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2021	167
2022	144
2023	115
2024	106
2025	100
Acquired technology
Finite-Lived Intangible Assets [Line Items]
Cost	1,019	1,020
Accumulated Amortization	636	557
Net Book Value	383	463
Intellectual property
Finite-Lived Intangible Assets [Line Items]
Cost	489	466
Accumulated Amortization	275	239
Net Book Value	214	227
Other acquired intangibles
Finite-Lived Intangible Assets [Line Items]
Cost	494	494
Accumulated Amortization	176	116
Net Book Value	$ 318	$ 378

Finite-lived Intangible Assets Acquired, related to Business Combination

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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