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Accounting Changes - Narrative (Details) - USD ($) $ in Millions | Oct. 01, 2018 | Oct. 01, 2019
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ASU 2018-02 |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Tax Cuts and Jobs Act of 2017, reclassification from AOCI to retained earnings, tax effect | $ 6.6 |
Minimum | Forecast | Subsequent Event | ASU 2016-02 |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Operating lease, right-of-use asset |  | $ 400.0
Operating lease, liability |  | 400.0
Maximum | Forecast | Subsequent Event | ASU 2016-02 |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Operating lease, right-of-use asset |  | 600.0
Operating lease, liability |  | $ 600.0

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- Definition Amount of increase (decrease) in accumulated other comprehensive income (AOCI) for reclassification to retained earnings of tax effect from remeasurement of deferred tax pursuant to Tax Cuts and Jobs Act. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL116659650-108580 + Details
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