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Debt - Additional Information (Details) - USD ($) | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2020 | Jun. 30, 2020
Senior bank debt | Revolver |  |  |
Debt Instrument [Line Items] |  |  |
Total available borrowing | $ 1,250,000,000 | $ 1,250,000,000 |
Additional borrowing amount | 500,000,000.0 | 500,000,000.0 |
Borrowings outstanding | 0 | 0 |
Senior bank debt | Term Loan |  |  |
Debt Instrument [Line Items] |  |  |
Total available borrowing | 350,000,000.0 | 350,000,000.0 |
Additional borrowing amount | 75,000,000.0 | $ 75,000,000.0 |
Senior bank debt | Term Loan | LIBOR |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on debt variable rate |  | 0.875% |
Senior notes | 2030 Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Face amount |  |  | $ 350,000,000.0
Debt interest rate |  |  | 3.30%
Junior subordinated notes | 2060 Junior Subordinated Notes |  |  |
Debt Instrument [Line Items] |  |  |
Face amount | $ 275,000,000.0 | $ 275,000,000.0 |
Debt interest rate | 4.75% | 4.75% |
Redemption price, percentage | 100.00% |  |
Junior subordinated notes | 2060 Junior Subordinated Notes | On or after September 30, 2025 |  |  |
Debt Instrument [Line Items] |  |  |
Redemption price, percentage | 100.00% |  |
Junior subordinated notes | 2060 Junior Subordinated Notes | Prior to September 30, 2025 |  |  |
Debt Instrument [Line Items] |  |  |
Redemption price, percentage | 100.00% |  |
Junior subordinated notes | 2060 Junior Subordinated Notes | Period of certain changes in tax laws, regulations or interpretations |  |  |
Debt Instrument [Line Items] |  |  |
Redemption price, percentage | 102.00% |  |

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- Definition Line of Credit Facility, Maximum Borrowing Capacity, Additional Amount + 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 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=119993939&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=120391452&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 The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the 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)) -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 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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