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

No definition available.

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

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ 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

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ 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 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

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Borrowings - Senior notes and Subordinate Notes (Details) - USD ($) $ in Millions	Jun. 01, 2020	May 25, 2017	Jun. 30, 2020	Dec. 31, 2019
3.75% notes maturing May 25, 2022 \| Senior notes
Long-term debt
Issuance of debt		$ 40.0
Interest rate (as a percent)		3.75%
Unamortized debt issuance cost			$ 0.3	$ 0.3
4.75% notes maturing May 25, 2027 \| Subordinated debt
Long-term debt
Issuance of debt		$ 60.0
Unamortized debt issuance cost			0.7	$ 0.8
4.75% notes maturing May 25, 2027 \| First Five Years \| Subordinated debt
Long-term debt
Interest rate (as a percent)		4.75%
4.75% notes maturing May 25, 2027 \| Three-month LIBOR \| Subordinated debt
Long-term debt
Floating interest rate margin (as a percent)		2.919%
5.25% notes maturing June 1, 2030 \| Subordinated debt
Long-term debt
Issuance of debt	$ 125.0
Floating interest rate margin (as a percent)	5.11%
Unamortized debt issuance cost			$ 2.3
5.25% notes maturing June 1, 2030 \| First Five Years \| Subordinated debt
Long-term debt
Interest rate (as a percent)	5.25%