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Derivatives and Hedging Activities - Summary of Amounts Recorded in Balance Sheet Related to Cumulative Basis Adjustment for Fair Value Interest Rate Risk Hedges (Details) - USD ($) $ in Millions | Jun. 30, 2019 | Jun. 30, 2018
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Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |
Carrying amount of the hedged liabilities | $ 151.6 | $ 147.1
Cumulative amount of fair value loss (gain) in the carrying amount of the hedged liabilities | $ 1.6 | $ (2.9)

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- Definition Amount of liability hedged in fair value hedging relationship. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4EE -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109999712-113959 + Details
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- Definition Amount of cumulative increase (decrease) in fair value of hedged liability in fair value hedge, attributable to hedged risk. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4EE -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109999712-113959 + Details
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