Stock-Based Compensation Expense - Awards Earned and Released (Details) - Performance Shares [Member] - shares |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2016 |
Mar. 31, 2015 |
Mar. 31, 2014 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Number of Shares Earned | 31,658,000 | 19,446,000 | 12,254,000 |
| Number of Shares Withheld for Tax Obligation | 8,669,000 | 4,284,000 | 1,660,000 |
| Number of Shares Released | 22,989,000 | 15,162,000 | 10,594,000 |
| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- 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. No definition available.
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| X | ||||||||||
- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Details
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