Accrued Expenses and Other Current Liabilities (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Accrued Expenses and Other Current Liabilities [Abstract]
Accrued compensation and benefits	$ 172	$ 182
Accrued interest payable	67	66
Accrued income taxes	11	31
Other current liabilities	322	268
Accrued expenses and other current liabilities — third parties	572	547
Accrued expenses and other current liabilities — related party	$ 0	$ 250