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Employee Retirement Plans (Details) - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013
Defined Benefit Plan Disclosure |  |  |
Amortization of net actuarial losses | $ 11,000,000 |  |
Amortization of prior service credits | 200,000 |  |
Projected benefit obligations of unfunded and non qualified supplemental executive retirement plans | 40,100,000 | $ 38,400,000 |
Net cost to sponsor unfunded and non-qualified supplemental executive retirement plans | 2,300,000 | 2,600,000 | $ 3,000,000
Amounts recorded in UGI's stockholders include pre-tax losses representing unrecognized actuarial losses | (10,100,000) | $ (10,200,000) |
Amount of expected amortization of pre-tax actuarial losses into retiree benefit cost | $ 1,000,000 |  |
Percentage of aggregate employer securities holdings to not to exceed fair value assets | 10.00% |  |
Percentage of common stock represented pension plan assets | 10.10% | 9.60% |
Costs of benefits under savings plans | $ 15,200,000 | $ 14,700,000 | 14,000,000
Supplemental Employee Retirement Plans |  |  |
Defined Benefit Plan Disclosure |  |  |
Pension and Other Postretirement Benefit contributions | 0 | 300,000 | 21,600,000
Portion Used to Fund Company Established Trusts | Supplemental Employee Retirement Plans |  |  |
Defined Benefit Plan Disclosure |  |  |
Pension and Other Postretirement Benefit contributions |  |  | 21,000,000
Other Assets | Supplemental Defined Contribution Executive Retirement Plans |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of Pension and Other Postretirement Benefit contributions | 4,200,000 | 3,400,000 |
Other Assets | Supplemental Employee Retirement Plans |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of Pension and Other Postretirement Benefit contributions | 26,100,000 | 26,600,000 |
U.S Pension Plans |  |  |
Defined Benefit Plan Disclosure |  |  |
ABO for the Pension Plans | 523,700,000 | 499,100,000 |
Contribution made to Pension Plan | 11,100,000 | 19,200,000 | $ 22,400,000
Fair value of Pension and Other Postretirement Benefit contributions | $ 430,800,000 | $ 442,400,000 |

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- Definition Net costs for unfunded and non-qualified supplemental executive retirement plans. + References No definition available. + Details
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- Definition Percentage of aggregate employer securities holdings to not to exceed fair value assets. + References No definition available. + Details
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- Definition Net costs for unfunded and non qualified supplemental executive retirement plans. + References No definition available. + Details
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- Definition Projected benefit obligations of unfunded and non qualified supplemental executive retirement plans. + References No definition available. + Details
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- Definition For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Accumulated Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6503844 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition The pretax net amount of gains and losses that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases or decreases in other comprehensive income as they arise. Gains and losses are due to changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition The increase in the fair value of plan assets from contributions made by the employer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Amount included in accumulated other comprehensive income (AOCI) related to gain (loss) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position. + References No definition available. + Details
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- Definition Amount included in accumulated other comprehensive income (AOCI) related to prior service cost (credit) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position. + References No definition available. + Details
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- Definition The amount of cash or cash equivalents contributed during the reporting period by the entity to fund its pension plans and its non-pension postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3536-108585 + Details
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