The minimum interest coverage ratio required to be maintained under the terms of the debt agreement.

No definition available.

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- Definition

The maximum leverage ratio allowed under the terms of the debt agreement.

+ References

No definition available.

+ Details

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- Definition

Represents the period for sending a written notice to the holders of debt in case of prepayment of the debt.

+ References

No definition available.

+ Details

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- Definition

Minimum percentage of the original aggregate principal amount of the debt that may be prepaid.

+ References

No definition available.

+ Details

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer in the event of a change in control of the entity.

+ References

No definition available.

+ Details

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- Definition

Represents the period considered for maintenance of the interest coverage ratio.

+ References

No definition available.

+ Details

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- Definition

Represents the maximum priority debt of the entity, expressed as a percentage of consolidated net worth, allowed under the terms of the debt agreement.

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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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

+ Details

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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.

+ Details

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

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- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ 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(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow for the settlement of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, as it matures.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

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Debt - Senior Notes (Details) - USD ($) $ in Millions			6 Months Ended
Debt - Senior Notes (Details) - USD ($) $ in Millions	Jan. 18, 2019	Jan. 18, 2017	Jun. 30, 2019	Jan. 31, 2012
Debt
Principal repayment of Senior Notes			$ 15.0
US Dollar notes under the Note Purchase Agreement
Debt
Senior notes				$ 240.0
Additional aggregate principal amount that may be issued			$ 600.0
Minimum percentage of original aggregate principal that may be prepaid			10.00%
Prepayment price as percentage of principal amount			100.00%
Prepayment price as percentage of principal amount, in the event of a change in control			100.00%
Maximum leverage ratio allowed			3.50
Period for interest coverage ratio			1 year
Minimum interest coverage ratio required			2.50
Priority debt as a percentage of consolidated net worth			25.00%
US Dollar notes under the Note Purchase Agreement \| Minimum
Debt
Written notice period to holders of the Notes			30 days
US Dollar notes under the Note Purchase Agreement \| Maximum
Debt
Written notice period to holders of the Notes			60 days
3.16% Series 2012A Senior Notes, Tranche A, due January 18, 2017
Debt
Senior notes				$ 20.0
Interest rate, stated percentage				3.16%
Principal repayment of Senior Notes		$ 20.0
3.74% Series 2012A Senior Notes, Tranche B, due January 18, 2019
Debt
Senior notes				$ 15.0
Interest rate, stated percentage				3.74%
Principal repayment of Senior Notes	$ 15.0
4.31% Series 2012A Senior Notes, Tranche C, due January 18, 2022
Debt
Senior notes				$ 105.0
Interest rate, stated percentage				4.31%
4.46% Series 2012A Senior Notes, Tranche D, due January 18, 2024
Debt
Senior notes				$ 100.0
Interest rate, stated percentage				4.46%