Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after accumulated amortization, of debt premium.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Debt - Schedule of Long-term Debt (Details) € in Millions, $ in Millions	Sep. 30, 2017 USD ($)	Oct. 31, 2016	Sep. 30, 2016 USD ($)	Jun. 30, 2016	Sep. 30, 2015 USD ($)	May 29, 2015 EUR (€)	May 29, 2015 USD ($)	Apr. 30, 2015 EUR (€)
Debt Instrument
Total long-term debt	$ 4,172.1		$ 3,795.5
Less: current maturities	(177.5)		(29.5)
Total long-term debt due after one year	3,994.6		3,766.0
AmeriGas Propane
Debt Instrument
Unamortized debt issuance costs	(31.3)		(26.6)
Total long-term debt	2,572.3		2,333.6
AmeriGas Propane \| Other
Debt Instrument
Long-term debt, gross	17.3		14.2
AmeriGas Propane \| Senior Notes \| 5.50% due May 2025
Debt Instrument
Long-term debt, gross	$ 700.0		0.0
Stated interest rate	5.50%
AmeriGas Propane \| Senior Notes \| 5.875% due August 2026
Debt Instrument
Long-term debt, gross	$ 675.0		675.0
Stated interest rate	5.875%
AmeriGas Propane \| Senior Notes \| 5.625% due May 2024
Debt Instrument
Long-term debt, gross	$ 675.0		675.0
Stated interest rate	5.625%
AmeriGas Propane \| Senior Notes \| 5.75% due May 2027
Debt Instrument
Long-term debt, gross	$ 525.0		0.0
Stated interest rate	5.75%
AmeriGas Propane \| Senior Notes \| 7.00%, due May 2022
Debt Instrument
Long-term debt, gross	$ 0.0		$ 980.8
Stated interest rate			7.00%
AmeriGas Propane \| Senior Secured Notes \| HOLP Senior Secured Notes
Debt Instrument
Long-term debt, gross	11.3		$ 15.2
Unamortized premium	0.4		0.7
UGI International
Debt Instrument
Unamortized debt issuance costs	(4.6)		(6.7)
Total long-term debt	838.8		779.6
UGI International \| Other \| Other
Debt Instrument
Long-term debt, gross	21.3		1.4
France SAS \| Term Loan \| France SAS Senior Facilities term loan, due through April 2020
Debt Instrument
Long-term debt, gross	708.9		674.4
Total long-term debt						€ 600	$ 659.6	€ 600
Flaga \| Term Loan \| Flaga variable-rate term loan, due October 2020
Debt Instrument
Long-term debt, gross	54.1		51.4
Flaga \| Term Loan \| Flaga U.S. dollar variable-rate term loan, due September 2018
Debt Instrument
Long-term debt, gross	59.1		59.1		$ 59.1
UGI Utilities
Debt Instrument
Unamortized debt issuance costs	(3.9)		(3.5)
Total long-term debt	751.1		671.5
UGI Utilities \| Senior Notes \| 4.12%, due September 2046
Debt Instrument
Long-term debt, gross	$ 200.0		$ 200.0
Stated interest rate	4.12%		4.12%
UGI Utilities \| Senior Notes \| 4.98%, due March 2044
Debt Instrument
Long-term debt, gross	$ 175.0		$ 175.0
Stated interest rate	4.98%
UGI Utilities \| Senior Notes \| 4.12%, due October 2046
Debt Instrument
Long-term debt, gross	$ 100.0		0.0
Stated interest rate	4.12%	4.12%
UGI Utilities \| Senior Notes \| 6.21%, due September 2036
Debt Instrument
Long-term debt, gross	$ 100.0		100.0
Stated interest rate	6.21%
UGI Utilities \| Senior Notes \| 2.95%, due June 2026
Debt Instrument
Long-term debt, gross	$ 100.0		100.0
Stated interest rate	2.95%			2.95%
UGI Utilities \| Medium-term Notes \| 6.13%, due October 2034
Debt Instrument
Long-term debt, gross	$ 20.0		20.0
Stated interest rate	6.13%
UGI Utilities \| Medium-term Notes \| 6.50%, due August 2033
Debt Instrument
Long-term debt, gross	$ 20.0		20.0
Stated interest rate	6.50%
UGI Utilities \| Medium-term Notes \| 5.67%, due January 2018
Debt Instrument
Long-term debt, gross	$ 20.0		20.0
Stated interest rate	5.67%
UGI Utilities \| Medium-term Notes \| 7.25%, due November 2017
Debt Instrument
Long-term debt, gross	$ 20.0		20.0
Stated interest rate	7.25%
UGI Utilities \| Medium-term Notes \| 6.17%, due June 2017
Debt Instrument
Long-term debt, gross	$ 0.0		$ 20.0
Stated interest rate			6.17%
Other
Debt Instrument
Total long-term debt	$ 9.9		$ 10.8