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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
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-Paragraph 1A
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- Definition

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

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- Definition

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

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2016	Oct. 31, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balances, January 31, 2016			$ 1,619.6
Total other comprehensive loss	$ (57.7)	$ (16.2)	(66.4)	$ (33.2)
Balances, October 31, 2016	1,060.6		1,060.6
Net Unrealized Gains (Losses) on Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balances, January 31, 2016			15.7
Other comprehensive (loss) income before reclassifications			(2.5)
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss			(8.6)
Tax effects			(0.6)
Total other comprehensive loss			(11.7)
Balances, October 31, 2016	4.0		4.0
Net Unrealized Gains (Losses) on Available-for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balances, January 31, 2016			0.2
Other comprehensive (loss) income before reclassifications			3.1
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss			(0.7)
Tax effects			(0.6)
Total other comprehensive loss			1.8
Balances, October 31, 2016	2.0		2.0
Defined Benefit Pension Components
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balances, January 31, 2016			(28.3)
Other comprehensive (loss) income before reclassifications			(0.2)
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss			1.0
Tax effects			(0.2)
Total other comprehensive loss			0.6
Balances, October 31, 2016	(27.7)		(27.7)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balances, January 31, 2016			(108.7)
Other comprehensive (loss) income before reclassifications			(56.6)
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss			0.0
Tax effects			(0.5)
Total other comprehensive loss			(57.1)
Balances, October 31, 2016	(165.8)		(165.8)
AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balances, January 31, 2016			(121.1)
Other comprehensive (loss) income before reclassifications			(56.2)
Pre-tax (gains) losses reclassified from accumulated other comprehensive loss			(8.3)
Tax effects			(1.9)
Total other comprehensive loss			(66.4)
Balances, October 31, 2016	$ (187.5)		$ (187.5)