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Derivative Instruments and Hedging Activities - Narrative (Details) € in Millions | Sep. 30, 2019 USD ($) | Sep. 30, 2019 EUR (€) | Oct. 25, 2018 | Sep. 30, 2018 USD ($) | Sep. 30, 2018 EUR (€) | Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($)
--- | --- | --- | --- | --- | --- | --- | ---
Derivative |  |  |  |  |  |  |
Amount of net losses associated with interest rate hedges to be reclassified with interest rate hedges during the next 12 months | $ 3,500,000 |  |  |  |  |  |
Cash collateral pledged | 29,300,000 |  |  | $ 0 |  |  |
Cash collateral received | 0 |  |  | 12,200,000 |  |  |
Restricted cash | 63,700,000 |  |  | 9,600,000 |  | $ 10,300,000 | $ 15,600,000
IRPA |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Notional amount | $ 0 |  |  | 0 |  |  |
Foreign Exchange Forward |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Potential exposure coverage, percent | 90.00% | 90.00% |  |  |  |  |
Foreign currency contracts |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Notional amount | $ 516,000,000.0 |  |  | $ 512,200,000 |  |  |
Foreign currency contracts | Net Investment Hedging |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Notional amount | $ 0 | € 172.8 |  |  | € 0.0 |  |
Senior Notes | UGI International LLC | 3.25% Senior Unsecured Notes Due November 2025 |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Stated interest rate |  |  | 3.25% |  |  |  |

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