Share Based Compensation Arrangement by Share Based Payment Award, Exercise Period

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Points Grants In Period

+ Details

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Points Outstanding Number

+ Details

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Points Settled In Period

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- Definition

Share based Compensation Arrangement by Share Based Payment Award, Weighted Average Exercise Period

+ Details

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- Definition

Share based Compensation Arrangement by Share Based Payment Award, Weighted Average Vesting Period

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- Definition

The cash inflow associated with the amount received from holders exercising their stock options.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 18

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph i

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 19
-Subparagraph a

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- Definition

Description of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph a

+ Details

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- Definition

Share-based compensation cost during the period with respect to the award, which will be recognized in income (as well as the total recognized tax benefit) or capitalized as part of the cost of an asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph g(1)

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65

+ Details

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- Definition

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.

+ Details

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- Definition

The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph c(2)

+ Details

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- Definition

The quantity of shares issuable on stock options awarded under the plan during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph b(1)(d)

+ Details

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Stock-Based Compensation - Additional Information (Detail) In Millions, except Share data, unless otherwise specified	1 Months Ended	12 Months Ended
	Jul. 31, 2009	Mar. 31, 2011 Stock Options Fiscal 2002 Plan	Mar. 31, 2011 Minimum Stock Options Year	Mar. 31, 2011 Maximum Stock Options Year	Mar. 31, 2011 Stock Options USD ($)	Mar. 31, 2011 Stock Options JPY (¥)	Mar. 31, 2010 Stock Options JPY (¥)	Mar. 31, 2009 Stock Options JPY (¥)	Mar. 31, 2011 Stock Compensation Plan USD ($) Point	Mar. 31, 2011 Stock Compensation Plan JPY (¥)	Mar. 31, 2010 Stock Compensation Plan JPY (¥)	Mar. 31, 2009 Stock Compensation Plan JPY (¥)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock vesting period		2 years
Stock exercise period		10 years
Stock granted for purchase	18,000,000	300,900
Weighted average vesting period			1.67	1.92
Weighted average exercise period			9.67	9.92
Cash received from the exercise of stock options					$ 1	¥ 98	¥ 77	¥ 245
Total intrinsic value of options exercised					0	19	6	202
Incremental stock-based compensation costs recognized					$ 2	¥ 142	¥ 611	¥ 1,370	$ 3	¥ 255	¥ 355	¥ 356
Points granted									38,700	38,700
Points settled for individuals retired									8,975	8,975
Points outstanding									123,008	123,008