Debt - Additional Information (Details) $ in Millions	6 Months Ended
Jun. 30, 2020 USD ($)
Debt Additional Information
Debt Issuance Costs, Current, Net	$ (0.1)
Five-year Unsecured Revolving Credit Facility
Debt Additional Information
Letters of Credit Outstanding	0.0
Northwind Holdings LLC
Debt Additional Information
Periodic Principal Payments	30.0
4.500% Senior Notes due 2025 \| Senior Notes
Debt Additional Information
Proceeds from Issuance of Debt	$ 500.0

Debt Additional Information

No definition available.

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- Definition

Amount of the required periodic payments applied to principal.

+ References

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- Definition

Amount, after accumulated amortization, of debt issuance costs classified as current. 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 210.5-02.8)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

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