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Short And Long-Term Debt Unsecured Notes (Details) - Senior Notes | Sep. 30, 2018
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4.50% Senior Notes |
Debt Instrument [Line Items] |
Interest Rate | 4.50%
5.25% Senior Notes |
Debt Instrument [Line Items] |
Interest Rate | 5.25%
4.875% Senior Notes |
Debt Instrument [Line Items] |
Interest Rate | 4.875%

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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=6877327&loc=d3e13212-122682 + Details
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