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Financial Guarantees and Warranties (Details) | 12 Months Ended
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Mar. 31, 2018 USD ($)
Guarantor Obligations [Line Items] |
Guarantee obligations, expiring in 2019 | $ 178,000,000
Guarantee obligations, expiring in 2020 | 18,000,000
Guarantee obligations, expiring in 2021 | 7,000,000
Guarantee obligations, expiring in 2022 | 10,000,000
Guarantee obligations, expiring in 2023 | 18,000,000
Guarantee obligations, expiring after 2023 | 107,000,000
Guarantee Obligations Inventory Repurchase Guarantees |
Guarantor Obligations [Line Items] |
Guarantor obligations, maximum exposure | $ 234,000,000
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 | $ 104,000,000
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 | $ 259,000,000

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- Definition 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=82913245&loc=d3e12069-110248 + Details
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