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Subsequent Events - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		6 Months Ended	12 Months Ended
	Jul. 03, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 20, 2016
Subsequent Event [Line Items]
Preferred shares, liquidation preference, value				$ 250.0
Preference shares, par value (in usd per share)		$ 0.0015144558	$ 0.0015144558
7.250% preference shares
Subsequent Event [Line Items]
Preferred Stock, Dividend Rate, Percentage		7.25%	7.25%
Preference shares, par value (in usd per share)		$ 0.0015144558	$ 0.0015144558
Subsequent Event | 7.250% preference shares
Subsequent Event [Line Items]
Preferred Stock, Dividend Rate, Percentage	7.25%
Preferred shares, liquidation preference, value	$ 160.0
Preference shares, par value (in usd per share)	$ 25

X

- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

No definition available.

+ Details

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X

- Definition

Value of the difference between preference in liquidation and the par or stated values of the preferred shares.

+ References

No definition available.

+ Details

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X

- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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- Details

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