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

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ 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
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-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

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Period Type:	instant

- 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

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

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ 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

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Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- 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) SFr in Millions, $ in Millions					12 Months Ended
	Dec. 11, 2019 USD ($)	Jan. 18, 2019 USD ($)	Jan. 18, 2017 USD ($)	Oct. 27, 2015 USD ($)	Dec. 31, 2020	Dec. 31, 2019 USD ($)	Dec. 11, 2019 CHF (SFr)	Jan. 31, 2012 USD ($)
Revolving lines of credit
Maximum commitment						$ 732.9
Principal repayment of Senior Notes						$ 15.0
2012 Note Purchase Agreement
Revolving lines of credit
Senior notes								$ 240.0
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%
2012 Note Purchase Agreement \| Minimum
Revolving lines of credit
Written notice period to holders of the Notes					30 days
2012 Note Purchase Agreement \| Maximum
Revolving lines of credit
Written notice period to holders of the Notes					60 days
3.16% Series 2012A Senior Notes, Tranche A, due January 18, 2017
Revolving lines of credit
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
Revolving lines of credit
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
Revolving lines of credit
Senior notes				$ 105.0				$ 105.0
Interest rate, stated percentage								4.31%
4.46% Series 2012A Senior Notes, Tranche D, due January 18, 2024
Revolving lines of credit
Senior notes				100.0				$ 100.0
Interest rate, stated percentage								4.46%
2019 Term Loan
Revolving lines of credit
Maximum commitment	$ 300.0
Revolving credit facility term	7 years
2019 Note Purchase Agreement
Revolving lines of credit
Interest rate added to base rate (as a percent)	1.01%
Additional aggregate principal amount that may be issued \| SFr							SFr 297
Prepayment price as percentage of principal amount	10.00%
Prepayment price as percentage of principal amount, in the event of a change in control	100.00%
Maximum leverage ratio allowed	3.50
Minimum interest coverage ratio required	2.50
Priority debt as a percentage of consolidated net worth	15.00%
2015 Revolving Credit Agreement
Revolving lines of credit
Maximum commitment				$ 500.0
Revolving credit facility term				5 years
Prime rate \| 2019 Term Loan
Revolving lines of credit
Variable interest rate base	prime rate
Federal Funds \| 2019 Term Loan
Revolving lines of credit
Interest rate added to base rate (as a percent)	0.50%
Adjusted USD LIBOR \| 2019 Term Loan
Revolving lines of credit
Variable interest rate base	adjusted USD LIBOR
Interest rate added to base rate (as a percent)	1.00%
Adjusted USD LIBOR \| 2019 Term Loan \| Minimum
Revolving lines of credit
Interest rate added to base rate (as a percent)	0.10%
Adjusted USD LIBOR \| 2019 Term Loan \| Maximum
Revolving lines of credit
Interest rate added to base rate (as a percent)	0.50%
USD LIBOR \| 2019 Term Loan
Revolving lines of credit
Variable interest rate base	USD LIBOR
USD LIBOR \| 2019 Term Loan \| Minimum
Revolving lines of credit
Interest rate added to base rate (as a percent)	1.00%
USD LIBOR \| 2019 Term Loan \| Maximum
Revolving lines of credit
Interest rate added to base rate (as a percent)	1.50%