This element represents the amount of gain (loss) on sale of properties during the reporting period gross of the applicable income taxes realized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 974
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-15.(a)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=6875705&loc=d3e641549-123027

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Period Type:	duration

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

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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

No definition available.

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Details

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Segments of Operations - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended
Segments of Operations - Narrative (Details) $ in Millions	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Jun. 30, 2018 segment
Segment Reporting Information [Line Items]
Number of segments \| segment			3
Property and Casualty Insurance \| Real Estate Investment
Segment Reporting Information [Line Items]
Pretax income from the sale of real estate properties		$ 13
Other
Segment Reporting Information [Line Items]
Write off of Deferred Debt Issuance Cost	$ 7