CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares |
Mar. 31, 2019 |
Mar. 31, 2018 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Ordinary shares, par value (in dollars per share) | $ 0 | $ 0 |
| Ordinary shares, issued (shares) | 566,787,620 | 578,317,848 |
| Ordinary shares, outstanding (shares) | 516,548,265 | 528,078,493 |
| Treasury stock (shares) | 50,239,355 | 50,239,355 |