Commitments and contingencies.

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- Definition

Employee and other relocation costs.

+ References

No definition available.

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- Definition

Employee and other relocation costs incurred to date.

+ References

No definition available.

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- Definition

Total estimated moving and relocation expenses.

+ References

No definition available.

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- Definition

Provision for indemnification.

+ References

No definition available.

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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=6851643&loc=d3e12069-110248

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- Definition

This item represents the portion of monthly guaranty fees collected representing the interest imputed and recognized under the prospective interest method on the present value of the contractually stipulated guarantee payments at inception of the contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13 (d))
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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- Definition

Date which lease or group of leases is set to expire, in CCYY-MM-DD format.

+ References

No definition available.

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- Definition

Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 55
-Paragraph 40
-Subparagraph (Note 3)
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-Topic 840
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717

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Commitments and Contingencies - Additional Information (Details) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Commitments And Contingencies [Line Items]
Minimum lease commitments	$ 64,000,000	$ 64,000,000		$ 55,000,000
Indemnification provisions	0	0		0
Putnam and Gibson Counties [Member] \| Performance Guarantee [Member]
Commitments And Contingencies [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	100,000,000	100,000,000		100,000,000
Facility Relocation [Member]
Commitments And Contingencies [Line Items]
Relocation costs for employees and other relocation expenses	118,000,000	118,000,000
Relocation costs for employees and other relocation expenses incurred to date	48,000,000	48,000,000
Relocation costs incurred during the period	13,000,000	$ 29,000,000
TMS [Member]
Commitments And Contingencies [Line Items]
15-year lease agreement between TMCC and TMS		15 years
Expiration date of the 15-year lease agreement between TMCC and TMS		Mar. 31, 2018
TMCC-affiliated companies [Member]
Commitments And Contingencies [Line Items]
Minimum lease commitments	12,000,000	$ 12,000,000		$ 16,000,000
TMCC-affiliated companies [Member] \| Putnam and Gibson Counties [Member] \| Performance Guarantee [Member]
Commitments And Contingencies [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	100,000,000	100,000,000
TMCC-affiliated companies [Member] \| Putnam and Gibson Counties [Member] \| Performance Guarantee [Member] \| 2028 [Member]
Commitments And Contingencies [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	20,000,000	20,000,000
TMCC-affiliated companies [Member] \| Putnam and Gibson Counties [Member] \| Performance Guarantee [Member] \| 2029 [Member]
Commitments And Contingencies [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	50,000,000	50,000,000
TMCC-affiliated companies [Member] \| Putnam and Gibson Counties [Member] \| Performance Guarantee [Member] \| 2030 [Member]
Commitments And Contingencies [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	10,000,000	10,000,000
TMCC-affiliated companies [Member] \| Putnam and Gibson Counties [Member] \| Performance Guarantee [Member] \| 2031 [Member]
Commitments And Contingencies [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	10,000,000	10,000,000
TMCC-affiliated companies [Member] \| Putnam and Gibson Counties [Member] \| Performance Guarantee [Member] \| 2032 [Member]
Commitments And Contingencies [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	$ 10,000,000	$ 10,000,000
TMCC-affiliated companies [Member] \| Putnam and Gibson Counties [Member] \| Affiliate Pollution Control and Solid Waste Disposal Bonds [Member] \| Scenario, Forecast [Member]
Commitments And Contingencies [Line Items]
Guaranty Fee			$ 78,000