CONSOLIDATED STATEMENTS OF SHAREHOLDERS EQUITY - 6 months ended Mar. 31, 2018 $ in Millions	USD ($)
Permanent equity, beginning balance at Sep. 30, 2017	$ 1,946.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	542.3
Other unrealized losses	(9.8)
Actuarial adjustments to pension plans	(0.4)
Translation adjustment	22.2
Comprehensive (loss) income	120.5
Permanent equity, ending balance at Mar. 31, 2018	$ 1,343.7

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount after tax of (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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