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Debt - Notes - Summary of Notes Activity (Parenthetical) (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($)
3.00% Notes [Member] |
Debt Instrument [Line Items] |
Proceeds from issuance of unsecured debt | $ 600.0
Debt instrument, interest rate, stated percentage | 3.00%
Proceeds from debt, net of issuance costs | $ 597.5
2.50% Notes [Member] |
Debt Instrument [Line Items] |
Proceeds from issuance of unsecured debt | $ 600.0
Debt instrument, interest rate, stated percentage | 2.50%
Proceeds from debt, net of issuance costs | $ 597.0

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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 The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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 + Details
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- Definition The cash inflow from the issuance of long-term debt that is not secured by collateral. Excludes proceeds from tax exempt unsecured debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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