Recent Adopted and Issued Accounting Pronouncements (Policies)	3 Months Ended
Apr. 30, 2019
Recent Adopted and Issued Accounting Pronouncements [Abstract]
Recent Adopted and Issued Accounting Pronouncements	Recent Adopted and Issued Accounting Pronouncements Recently Adopted Accounting Guidance In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” ASU 2016‑02 requires that a lessee recognize in the statement of financial position a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term (other than leases that meet the definition of a short-term lease). The liability will be equal to the present value of lease payments. The asset will be based on the liability, subject to certain adjustments. The Company adopted ASU 2016-02 during the first quarter of fiscal 2020 using the optional transition method to apply the standard as of the effective date. As a result of adopting this standard, as of February 1, 2019, the Company recognized operating lease liabilities of $384.5 million and corresponding operating lease assets of $341.2 million. In addition, the Company recorded a $9.6 million impairment of the operating lease assets, net of tax, at adoption. The impairment was recorded as a reduction to retained earnings. In June 2018, the FASB issued ASU 2018‑07, “FASB Simplifies Guidance on Nonemployee Share-Based Payments”, which supersedes ASC 505‑50 and expands the scope of ASC 718 to include all share-based payment arrangements related to the acquisition of goods and services from both nonemployees and employees. As a result, most of the guidance in ASC 718 associated with employee share-based payments, including most of its requirements related to classification and measurement, applies to nonemployee share-based payment arrangements. The Company adopted ASU 2018‑07 during the first quarter of fiscal 2020. The adoption did not have an impact on the Company’s condensed consolidated financial statements. In February 2018, the FASB issued ASU 2018‑02, “Income Statement — Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income”, which provides financial statement preparers with an option to reclassify stranded tax effects within accumulated other comprehensive income to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate (or portion thereof) in the Tax Cut and Jobs Act is recorded. The Company adopted ASU 2018‑02 during the first quarter of fiscal 2020. The adoption did not have an impact on the Company’s condensed consolidated financial statements. Issued Accounting Guidance Being Evaluated for Adoption In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement,” which makes a number of changes meant to add, modify or remove certain disclosure requirements associated with the movement among or hierarchy associated with Level 1, Level 2 and Level 3 fair value measurements. The amendments in ASU 2018-13 modify the disclosure requirements with respect to fair value measurements based on the concepts in FASB Concepts Statement, Conceptual Framework for Financial Reporting—Chapter 8: Notes to Financial Statements, including the consideration of costs and benefits. The amendments to changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. The amendments are effective for all entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years, with early adoption permitted. The Company is currently evaluating the potential impact of ASU 2018-13 on its consolidated financial statements.

Recent Adopted and Issued Accounting Pronouncements

Recently Adopted Accounting Guidance

In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” ASU 2016‑02 requires that a lessee recognize in the statement of financial position a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term (other than leases that meet the definition of a short-term lease). The liability will be equal to the present value of lease payments. The asset will be based on the liability, subject to certain adjustments. The Company adopted ASU 2016-02 during the first quarter of fiscal 2020 using the optional transition method to apply the standard as of the effective date. As a result of adopting this standard, as of February 1, 2019, the Company recognized operating lease liabilities of $384.5 million and corresponding operating lease assets of $341.2 million. In addition, the Company recorded a $9.6 million impairment of the operating lease assets, net of tax, at adoption. The impairment was recorded as a reduction to retained earnings.

In June 2018, the FASB issued ASU 2018‑07, “FASB Simplifies Guidance on Nonemployee Share-Based Payments”, which supersedes ASC 505‑50 and expands the scope of ASC 718 to include all share-based payment arrangements related to the acquisition of goods and services from both nonemployees and employees. As a result, most of the guidance in ASC 718 associated with employee share-based payments, including most of its requirements related to classification and measurement, applies to nonemployee share-based payment arrangements. The Company adopted ASU 2018‑07 during the first quarter of fiscal 2020. The adoption did not have an impact on the Company’s condensed consolidated financial statements.

In February 2018, the FASB issued ASU 2018‑02, “Income Statement — Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income”, which provides financial statement preparers with an option to reclassify stranded tax effects within accumulated other comprehensive income to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate (or portion thereof) in the Tax Cut and Jobs Act is recorded. The Company adopted ASU 2018‑02 during the first quarter of fiscal 2020. The adoption did not have an impact on the Company’s condensed consolidated financial statements.

Issued Accounting Guidance Being Evaluated for Adoption

In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement,” which makes a number of changes meant to add, modify or remove certain disclosure requirements associated with the movement among or hierarchy associated with Level 1, Level 2 and Level 3 fair value measurements. The amendments in ASU 2018-13 modify the disclosure requirements with respect to fair value measurements based on the concepts in FASB Concepts Statement, Conceptual Framework for Financial Reporting—Chapter 8: Notes to Financial Statements, including the consideration of costs and benefits. The amendments to changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. The amendments are effective for all entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years, with early adoption permitted. The Company is currently evaluating the potential impact of ASU 2018-13 on its consolidated financial statements.