Assets Held For Sale Assets Held For Sale (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2014
Assets Held-for-sale [Line Items]
Assets held for sale	$ 72		$ 102
Liabilities of Assets Held-for-sale	0		11
Loss (gain) on assets held for sale	11	0
Gain (Loss) on Disposition of Property Plant Equipment	(1)	(1)
South America [Member]
Assets Held-for-sale [Line Items]
Assets held for sale	72
Brazil [Member]
Assets Held-for-sale [Line Items]
Loss (gain) on assets held for sale	4
Proceeds from Sale of Property Held-for-sale	4
North America [Member]
Assets Held-for-sale [Line Items]
Loss (gain) on assets held for sale	7
Proceeds from Sale of Property Held-for-sale	31
Accounts Receivable [Member] | North America [Member]
Assets Held-for-sale [Line Items]
Proceeds from Sale of Property Held-for-sale	$ 1