Financial Guarantees and Warranties (Details)	12 Months Ended
Mar. 31, 2016 USD ($)
Guarantor Obligations [Line Items]
Guarantor obligations, current carrying value	$ 1,000,000
Guarantee obligations, expiring in 2017	194,000,000
Guarantee obligations, expiring in 2018	8,000,000
Guarantee obligations, expiring in 2019	10,000,000
Guarantee obligations, expiring in 2020	12,000,000
Guarantee obligations, expiring in 2021	12,000,000
Guarantee obligations, expiring after 2021	104,000,000
Guarantee Obligations Inventory Repurchase Guarantees
Guarantor Obligations [Line Items]
Guarantor obligations, maximum exposure	$ 201,000,000
Guarantee Obligations Inventory Repurchase Guarantees \| Minimum
Guarantor Obligations [Line Items]
Debt guarantee period	1 year
Guarantee Obligations Inventory Repurchase Guarantees \| Maximum
Guarantor Obligations [Line Items]
Debt guarantee period	2 years
Guarantee Obligations Customers Debt
Guarantor Obligations [Line Items]
Guarantor obligations, maximum exposure	$ 139,000,000
Guarantee Obligations Customers Debt \| Minimum
Guarantor Obligations [Line Items]
Debt guarantee period	1 year
Guarantee Obligations Customers Debt \| Maximum
Guarantor Obligations [Line Items]
Debt guarantee period	12 years
Standby Letters of Credit
Guarantor Obligations [Line Items]
Letters of credit outstanding	$ 142,000,000
Commitment to Investee Building and Equipment Construction
Guarantor Obligations [Line Items]
Guarantor obligations, maximum exposure	$ 4,000,000

Guarantee Obligations Exposure Expiring in Year Five

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Guarantee Obligations Exposure Expiring in Year Five Thereafter

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- Definition

Guarantee Obligations Exposure Expiring in Year Four

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- Definition

Guarantee Obligations Exposure Expiring in Year One

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No definition available.

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Guarantee Obligations Exposure Expiring in Year Three

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Guarantee Obligations Exposure Expiring in Year Two

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- Definition

Guarantor Obligations, Period

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- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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