Financial Guarantees and Warranties (Details)	12 Months Ended
Mar. 31, 2019 USD ($)
Guarantor Obligations [Line Items]
Guarantee obligations, expiring in 2020	$ 195,000,000
Guarantee obligations, expiring in 2021	22,000,000
Guarantee obligations, expiring in 2022	9,000,000
Guarantee obligations, expiring in 2023	15,000,000
Guarantee obligations, expiring in 2024	35,000,000
Guarantee obligations, expiring after 2024	90,000,000
Guarantee Obligations Inventory Repurchase Guarantees
Guarantor Obligations [Line Items]
Guarantor obligations, maximum exposure	251,000,000
Guarantee Obligations Customers Debt
Guarantor Obligations [Line Items]
Guarantor obligations, maximum exposure	115,000,000
Standby Letters of Credit
Guarantor Obligations [Line Items]
Letters of credit outstanding	$ 165,000,000
Minimum \| Guarantee Obligations Inventory Repurchase Guarantees
Guarantor Obligations [Line Items]
Debt guarantee period	1 year
Minimum \| Guarantee Obligations Customers Debt
Guarantor Obligations [Line Items]
Debt guarantee period	1 year
Maximum \| Guarantee Obligations Inventory Repurchase Guarantees
Guarantor Obligations [Line Items]
Debt guarantee period	2 years
Maximum \| Guarantee Obligations Customers Debt
Guarantor Obligations [Line Items]
Debt guarantee period	10 years

Guarantee Obligations Exposure Expiring in Year Five

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Guarantee Obligations Exposure Expiring in Year Five Thereafter

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Guarantee Obligations Exposure Expiring in Year Four

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Guarantee Obligations Exposure Expiring in Year One

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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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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=115931803&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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