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Accumulated Other Comprehensive Loss | 12 Months Ended
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Jan. 31, 2017
Accumulated Other Comprehensive Income (loss) [Abstract] |
Accumulated Other Comprehensive Loss | Accumulated Other Comprehensive Loss Accumulated other comprehensive loss, net of taxes, consisted of the following:
| Net Unrealized Gains (Losses) on Derivative Instruments |  | Net Unrealized Gains (Losses) on Available for Sale Securities |  | Defined Benefit Pension Components |  | Foreign Currency Translation Adjustments |  | Total
Balances, January 31, 2015 | $ | 42.8 |  |  | $ | 1.6 |  |  | $ | (23.7 | ) |  | $ | (74.0 | ) |  | $ | (53.3 | )
Other comprehensive income (loss) before reclassifications | 1.6 |  |  | (1.3 | ) |  | (6.8 | ) |  | (35.2 | ) |  | (41.7 | )
Pre-tax (gains) losses reclassified from accumulated other comprehensive income | (29.3 | ) |  | (0.1 | ) |  | 1.3 |  |  | — |  |  | (28.1 | )
Tax effects | 0.6 |  |  | — |  |  | 0.9 |  |  | 0.5 |  |  | 2.0 |
Net current period other comprehensive (loss) income | (27.1 | ) |  | (1.4 | ) |  | (4.6 | ) |  | (34.7 | ) |  | (67.8 | )
Balances, January 31, 2016 | 15.7 |  |  | 0.2 |  |  | (28.3 | ) |  | (108.7 | ) |  | (121.1 | )
Other comprehensive income (loss) before reclassifications | 7.4 |  |  | 3.3 |  |  | (5.8 | ) |  | (52.3 | ) |  | (47.4 | )
Pre-tax (gains) losses reclassified from accumulated other comprehensive income | (7.4 | ) |  | (1.5 | ) |  | 1.2 |  |  | — |  |  | (7.7 | )
Tax effects | (1.1 | ) |  | (0.5 | ) |  | (0.9 | ) |  | 0.2 |  |  | (2.3 | )
Net current period other comprehensive (loss) income | (1.1 | ) |  | 1.3 |  |  | (5.5 | ) |  | (52.1 | ) |  | (57.4 | )
Balances, January 31, 2017 | $ | 14.6 |  |  | $ | 1.5 |  |  | $ | (33.8 | ) |  | $ | (160.8 | ) |  | $ | (178.5 | )
Reclassifications related to gains and losses on available-for-sale securities are included in Interest and other expense, net. Refer to Note 2, "Financial Instruments" for the amount and location of reclassifications related to derivative instruments. Reclassifications of the defined benefit pension components are included in the computation of net periodic benefit cost. Refer to Note 14, "Retirement Benefit Plans."

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- Definition Accumulated Other Comprehensive Income (loss) [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669619-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e640-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e716-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e709-108580 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e681-108580 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Reclassification Adjustments -URI http://asc.fasb.org/extlink&oid=6522872 + Details
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