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v3.19.1

Proposed Merger (Details) - USD ($) |  |  | 6 Months Ended
--- | --- | --- | ---
Apr. 01, 2019 | Mar. 31, 2019 | Sep. 30, 2019 | Mar. 31, 2019
Merger Sub |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Termination fee payable to parent | $ 20,000,000 |  |  |
Expense reimbursement amount to parent, maximum | 5,000,000 |  |  |
Expense reimbursement amount from parent, maximum | $ 5,000,000 |  |  |
Subsequent Event | Merger Sub |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Dividends declared per common share (in USD per share, no less than) | $ 0.95 |  |  |
Subsequent Event | Forecast | Merger Sub |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Proposed consideration |  |  | $ 530,000,000 |
Subsequent Event | Common Stock | Forecast | Merger Sub |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Proposed consideration issuable (in shares) |  |  | 34,600,000 |
Units issuable (in units) |  |  | 10,615,711 |
Subsequent Event | Common Stock | Proposed Consideration One | Forecast | Merger Sub |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of shares issuable per acquiree stock (in shares) |  |  | 0.6378 |
Subsequent Event | Common Stock | Proposed Consideration Two | Forecast | Merger Sub |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of shares issuable per acquiree stock (in shares) |  |  | 0.500 |
Subsequent Event | Cash Without Interest | Proposed Consideration Two | Forecast | Merger Sub |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash issuable per acquiree stock |  |  | $ 7.63 |
Subsequent Event | Cash Without Interest | Proposed Consideration Three | Forecast | Merger Sub |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash issuable per acquiree stock |  |  | $ 35.325 |
AmeriGas Propane | AmeriGas Partners |  |  |  |
Business Acquisition [Line Items] |  |  |  |
General Partner held a general partner interest in AmeriGas Partners (percentage) |  | 1.00% |  | 1.00%

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