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Income Taxes (Tables)

12 Months Ended

Sep. 30, 2016

Income Taxes

Schedule of income tax (benefit) expense

		Fiscal Year Ended
		September 30, 2016			September 30, 2015			September 30, 2014
		(in millions)
Current:
Federal		$	33.7		$	(67.1	)	$	5.3
State			12.4			2.6			3.3
Foreign			26.1			37.2			46.3
​	​	​	​	​	​	​	​	​	​	​
Total current income tax (benefit) expense			72.2			(27.3	)		54.9
​	​	​	​	​	​	​	​	​	​	​
Deferred:
Federal			(63.4	)		(44.2	)		27.7
State			(5.4	)		1.2			5.6
Foreign			(41.3	)		(10.0	)		(6.2	)
​	​	​	​	​	​	​	​	​	​	​
Total deferred income tax (benefit) expense			(110.1	)		(53.0	)		27.1
​	​	​	​	​	​	​	​	​	​	​
Total income tax (benefit) expense		$	(37.9	)	$	(80.3	)	$	82.0
​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​

Major elements contributing to the difference between the U.S. federal statutory rate of 35.0% and the effective tax rate

		Fiscal Year Ended
		September 30, 2016						September 30, 2015						September 30, 2014
		Amount			%			Amount			%			Amount			%
		(in millions)
Tax at federal statutory rate		$	43.9			35.0	%	$	(53.0	)		35.0	%	$	110.2			35.0	%
State income tax, net of federal benefit			5.6			4.5			(2.3	)		1.5			5.0			1.6
Valuation allowance			(54.8	)		(43.6	)		30.0			(19.8	)		6.3			2.0
Exclusion of tax on non-controlling interests			(24.7	)		(19.7	)		(29.3	)		19.3			—			—
Income tax credits and incentives			(24.6	)		(19.6	)		(21.2	)		14.0			(18.8	)		(6.0	)
Foreign tax rate differential			(19.7	)		(15.7	)		(24.8	)		16.4			(38.8	)		(12.3	)
Tax exempt income			(17.6	)		(14.0	)		(13.2	)		8.7			(1.9	)		(0.6	)
Change in uncertain tax positions			(5.0	)		(4.0	)		6.6			(4.3	)		(4.5	)		(1.4	)
Change in tax rates			34.6			27.6			—			—			—			—
Foreign residual income			17.8			14.2			20.1			(13.3	)		16.9			5.4
Nondeductible costs			6.1			4.8			2.8			(1.8	)		2.8			0.9
Nondeductible transaction costs			—			—			2.8			(1.8	)		2.8			0.9
Other items, net			0.5			0.3			1.2			(0.9	)		2.0			0.6
​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​
Total income tax expense		$	(37.9	)		(30.2	)%	$	(80.3	)		53.0	%	$	82.0			26.1	%
​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​

Schedule of deferred tax assets (liabilities)

		Fiscal Year Ended
		September 30, 2016			September 30, 2015
		(in millions)
Deferred tax assets:
Compensation and benefit accruals not currently deductible		$	150.5		$	166.7
Net operating loss carryforwards			378.0			195.9
Self insurance reserves			24.7			46.8
Research and experimentation and other tax credits			125.3			43.0
Pension liability			180.9			165.6
Accrued liabilities			221.0			267.3
Other			4.3			11.4
​	​	​	​	​	​	​	​
Total deferred tax assets			1,084.7			896.7
​	​	​	​	​	​	​	​
Deferred tax liabilities:
Unearned revenue			(212.6	)		(101.9	)
Depreciation and amortization			(113.0	)		(76.5	)
Acquired intangible assets			(155.5	)		(219.2	)
Investment in subsidiaries			(261.4	)		(239.2	)
​	​	​	​	​	​	​	​
Total deferred tax liabilities			(742.5	)		(636.8	)
​	​	​	​	​	​	​	​
Valuation allowance			(183.8	)		(239.4	)
​	​	​	​	​	​	​	​
Net deferred tax assets		$	158.4		$	20.5
​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​

Reconciliation of the beginning and ending amount of gross unrecognized tax benefits

		Fiscal Year Ended
		September 30, 2016			September 30, 2015
		(in millions)
Balance at the beginning of the year		$	95.2		$	47.5
Gross increase due to acquisitions			—			49.4
Gross increase in current period's tax positions			7.6			6.0
Gross increase in prior years' tax positions			5.2			6.4
Gross decrease in prior years' tax positions			(16.6	)		(0.2	)
Decrease due to settlement with tax authorities			(3.2	)		(2.0	)
Decrease due to lapse of statute of limitations			(1.8	)		(4.6	)
Gross change due to foreign exchange fluctuations			1.5			(7.3	)
​	​	​	​	​	​	​	​
Balance at the end of the year		$	87.9		$	95.2
​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​

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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.

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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.

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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.

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Tabular disclosure of 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 (i.e., uncertain tax positions) and other types of income tax contingencies, including: (1) the policy on classification of interest and penalties; (2) a tabular reconciliation of the total amounts of unrecognized tax benefits at the beginning and end of the period; the total amount(s) of: (3) unrecognized tax benefits that, if recognized, would affect the effective tax rate, and (4) interest and penalties recognized in each of the income statement and balance sheet; (5) for positions for which it is reasonably possible that the total amounts unrecognized will significantly change within 12 months of the reporting date the: (i) nature of the uncertainty, (ii) nature of the event that could occur that would cause the change, and (iii) an estimate of the range of the reasonably possible change or a statement that an estimate of the range cannot be made; and (6) a description of tax years that remain subject to examination by major tax jurisdictions.

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