CONSOLIDATED BALANCE SHEETS (Parentheticals) (Successor [Member], USD $) In Millions, except Share data, unless otherwise specified	Sep. 30, 2014	Mar. 31, 2014
Successor [Member]
Allowance for Doubtful Accounts Receivable, Current	$ 303	$ 197
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common shares, shares authorized	9,000,000,000	9,000,000,000
Common Stock, Shares, Issued	3,955,000,000	3,941,000,000