CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Mar. 31, 2016
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 60,112	$ 64,608
Ordinary shares, par value (in dollars per share)	$ 0	$ 0
Ordinary shares, issued (shares)	586,818,174	595,062,966
Ordinary shares, outstanding (shares)	536,578,819	544,823,611
Treasury stock, shares (shares)	50,239,355	50,239,355