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

No definition available.

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- Definition

Amount after tax, before reclassification adjustments of other comprehensive income (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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- Definition

Amount after tax of other comprehensive income (loss) attributable to parent entity.

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- Definition

Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity.

+ References

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- Definition

Amount before tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

+ References

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Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 733.6
Other comprehensive (loss) income before reclassifications			29.2
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss			(6.7)
Tax effects			0.5
Total other comprehensive (loss) income	$ (2.6)	$ (57.7)	23.0	$ (66.4)
Ending balance	107.3		107.3
Net Unrealized Gains (Losses) on Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			14.6
Other comprehensive (loss) income before reclassifications			(10.2)
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss			(6.9)
Tax effects			1.7
Total other comprehensive (loss) income			(15.4)
Ending balance	(0.8)		(0.8)
Net Unrealized Gains (Losses) on Available-for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			1.5
Other comprehensive (loss) income before reclassifications			0.7
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss			0.0
Tax effects			(0.3)
Total other comprehensive (loss) income			0.4
Ending balance	1.9		1.9
Defined Benefit Pension Components
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(33.8)
Other comprehensive (loss) income before reclassifications			(0.1)
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss			0.1
Tax effects			0.0
Total other comprehensive (loss) income			0.0
Ending balance	(33.8)		(33.8)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(160.8)
Other comprehensive (loss) income before reclassifications			38.8
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss			0.1
Tax effects			(0.9)
Total other comprehensive (loss) income			38.0
Ending balance	(122.8)		(122.8)
AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(178.5)
Ending balance	$ (155.5)		$ (155.5)