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Debt and Finance Leases - Senior Notes Outstanding with Early Redemption Features (Details) - Recourse Debt	Dec. 31, 2019	May 24, 2019	May 14, 2019	Sep. 30, 2018	Jun. 30, 2018	Dec. 07, 2017	Aug. 02, 2016	May 23, 2016
Senior Notes due 2026
Debt Instrument [Line Items]
Interest rate, stated percentage	7.25%							7.25%
Senior Notes due 2027
Debt Instrument [Line Items]
Interest rate, stated percentage	6.625%			6.625%			6.625%
Senior Notes due 2028
Debt Instrument [Line Items]
Interest rate, stated percentage	5.75%			5.75%	5.75%	5.75%
Senior Notes due 2029
Debt Instrument [Line Items]
Interest rate, stated percentage	5.25%	5.25%	5.25%

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

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.

+ References

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