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Income Taxes (Tables) | 12 Months Ended
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Sep. 30, 2017
Income Tax Disclosure [Abstract] |
Income Before Income Taxes | Income before income taxes comprises the following:
| 2017 |  | 2016 |  | 2015
Domestic | $ | 527.3 |  |  | $ | 518.9 |  |  | $ | 552.3 |
Foreign | 174.1 |  |  | 191.1 |  |  | 39.5 |
Total income before income taxes | $ | 701.4 |  |  | $ | 710.0 |  |  | $ | 591.8 |
Provisions for Income Taxes | The provisions for income taxes consist of the following:
| 2017 |  | 2016 |  | 2015
Current expense (benefit): |  |  |  |  |
Federal | $ | (2.7 | ) |  | $ | 44.2 |  |  | $ | 97.1 |
State | 14.0 |  |  | 20.9 |  |  | 32.2 |
Foreign | 56.2 |  |  | 78.7 |  |  | 36.0 |
Investment tax credit | — |  |  | — |  |  | (1.2 | )
Total current expense | 67.5 |  |  | 143.8 |  |  | 164.1 |
Deferred expense (benefit): |  |  |  |  |
Federal | 125.8 |  |  | 81.2 |  |  | 28.1 |
State | 16.4 |  |  | 1.3 |  |  | 2.9 |
Foreign | (31.8 | ) |  | (4.8 | ) |  | (17.0 | )
Investment tax credit amortization | (0.3 | ) |  | (0.3 | ) |  | (0.3 | )
Total deferred expense | 110.1 |  |  | 77.4 |  |  | 13.7 |
Total income tax expense | $ | 177.6 |  |  | $ | 221.2 |  |  | $ | 177.8 |
Reconciliation of U.S. Federal Statutory Tax Rate to Effective Tax Rate | A reconciliation from the U.S. federal statutory tax rate to our effective tax rate is as follows:
| 2017 |  | 2016 |  | 2015
U.S. federal statutory tax rate | 35.0 | % |  | 35.0 | % |  | 35.0 | %
Difference in tax rate due to: |  |  |  |  |
Noncontrolling interests not subject to tax | (4.3 | ) |  | (6.2 | ) |  | (7.9 | )
State income taxes, net of federal benefit | 2.9 |  |  | 3.0 |  |  | 3.3 |
Valuation allowance adjustments | (1.1 | ) |  | (0.9 | ) |  | 0.8 |
Effects of foreign operations | (1.1 | ) |  | 0.6 |  |  | 0.2 |
Deferred tax effects of French tax rate change | (4.1 | ) |  | — |  |  | — |
Excess tax benefits on share-based payments | (1.3 | ) |  | — |  |  | — |
Other, net | (0.7 | ) |  | (0.3 | ) |  | (1.4 | )
Effective tax rate | 25.3 | % |  | 31.2 | % |  | 30.0 | %
Deferred Tax Liabilities (Assets) | Deferred tax liabilities (assets) comprise the following at September 30:
| 2017 |  | 2016
Excess book basis over tax basis of property, plant and equipment | $ | 975.8 |  |  | $ | 873.9 |
Investment in AmeriGas Partners | 326.8 |  |  | 323.2 |
Intangible assets and goodwill | 98.2 |  |  | 87.1 |
Utility regulatory assets | 132.2 |  |  | 148.3 |
Other | 11.7 |  |  | 11.9 |
Gross deferred tax liabilities | 1,544.7 |  |  | 1,444.4 |
Pension plan liabilities | (57.7 | ) |  | (79.7 | )
Employee-related benefits | (65.4 | ) |  | (63.1 | )
Operating loss carryforwards | (30.9 | ) |  | (31.5 | )
Foreign tax credit carryforwards | (106.1 | ) |  | (105.1 | )
Utility regulatory liabilities | (9.3 | ) |  | (13.9 | )
Derivative instruments | (1.7 | ) |  | (14.7 | )
Utility environmental liabilities | (22.2 | ) |  | (22.8 | )
Other | (27.8 | ) |  | (28.3 | )
Gross deferred tax assets | (321.1 | ) |  | (359.1 | )
Deferred tax assets valuation allowance | 107.1 |  |  | 114.3 |
Net deferred tax liabilities | $ | 1,330.7 |  |  | $ | 1,199.6 |
Reconciliation of Unrecognized Tax Benefits | A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows:
| 2017 |  | 2016 |  | 2015
Unrecognized tax benefits — beginning of year | $ | 7.2 |  |  | $ | 3.2 |  |  | $ | 2.4 |
Additions for tax positions of the current year | 1.9 |  |  | 2.2 |  |  | 0.9 |
Additions for tax positions taken in prior years | 4.6 |  |  | 2.3 |  |  | 0.5 |
Settlements with tax authorities/statute lapses | (1.5 | ) |  | (0.5 | ) |  | (0.6 | )
Unrecognized tax benefits — end of year | $ | 12.2 |  |  | $ | 7.2 |  |  | $ | 3.2 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319 + Details
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