BASIS OF PRESENTATION	6 Months Ended
Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION The accompanying (a) Condensed Consolidated Balance Sheet of Regal Beloit Corporation (the “Company”) as of December 30, 2017, which has been derived from audited Consolidated Financial Statements, and (b) unaudited interim Condensed Consolidated Financial Statements as of June 30, 2018 and for the six months ended June 30, 2018 and July 1, 2017, have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and note disclosures normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"), have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading. It is suggested that these Condensed Consolidated Financial Statements be read in conjunction with the Consolidated Financial Statements and the Notes thereto included in the Company’s 2017 Annual Report on Form 10-K filed on February 27, 2018. In the opinion of management, all adjustments considered necessary for a fair presentation of financial results have been made. Except as otherwise discussed, such adjustments consist of only those of a normal recurring nature. Operating results for the three and six months ended June 30, 2018 are not necessarily indicative of the results that may be expected for the entire fiscal year ending December 29, 2018. The Condensed Consolidated Financial Statements have been prepared in accordance with GAAP, which requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the Condensed Consolidated Financial Statements and revenues and expenses during the periods reported. Actual results could differ from those estimates. The Company uses estimates in accounting for, among other items, allowance for doubtful accounts; excess and obsolete inventory; share-based compensation; acquisitions; product warranty obligations; pension and post retirement assets and liabilities; derivative fair values; goodwill and other asset impairments; health care reserves; retirement benefits; rebates and incentives; litigation claims and contingencies, including environmental matters; and income taxes. The Company accounts for changes to estimates and assumptions when warranted by factually based experience. The Company operates on a 52/53 week fiscal year ending on the Saturday closest to December 31. New Accounting Standards In February 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220), Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This ASU addresses the income tax effects of items in Accumulated Other Comprehensive Loss (“AOCI”) which were originally recognized in other comprehensive income, rather than in income from continuing operations. Specifically, it permits a reclassification from AOCI to Retained Earnings for the adjustment of deferred taxes due to the reduction of the historical corporate income tax rate to the newly enacted corporate income tax rate resulting from the US tax law changes enacted in December 2017. It also requires certain disclosures about these reclassifications. This ASU is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years, with early adoption permitted. The new guidance must be applied either on a prospective basis in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the US federal corporate income tax rate in the US tax law changes are recognized. The Company has elected to early adopt this standard as of April 1, 2018. During the second quarter, the Company has elected to reclassify the stranded effects from the US tax law changes from AOCI to Retained Earnings on a prospective basis. As a result of the adoption of ASU 2018-02, the Company has reclassified $4.6 million from AOCI to Retained Earnings. The adoption did not have a material impact on the Company's Condensed Consolidated Financial Statements. See Note 4 of Notes to Condensed Consolidated Financial Statements for a breakout of the impact by component. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815) - Targeted Improvements to Accounting for Hedging Activities. The amendments in this update better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. The ASU is effective for annual periods beginning after December 15, 2018, and interim periods within those annual periods. Early adoption is permitted. The Company plans to adopt this pronouncement for its fiscal year beginning December 30, 2018. The Company is currently evaluating the impact of the pending adoption of this standard on its Condensed Consolidated Financial Statements. In May 2017, the FASB issued ASU 2017-09, Stock Compensation - Scope of Modification Accounting. The ASU amends the scope of modification accounting for share-based payment arrangements. The ASU provides guidance on the types of changes to the terms or conditions of share-based payment awards to which an entity would be required to apply modification accounting under Accounting Standards Codification ("ASC") 718. Specifically, an entity would not apply modification accounting if the fair value, vesting conditions, and classification of the awards are the same immediately before and after the modification. The ASU is effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods. Prospective application is required. The Company prospectively adopted ASU 2017-09 for its fiscal year beginning on December 31, 2017 and it did not have a material impact on the Company's Condensed Consolidated Financial Statements. In February 2017, the FASB issued ASU 2017-07, Compensation - Retirement Benefits: Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The ASU requires companies to present the service cost component of net periodic benefit cost in the same income statement line item as other compensation costs arising from services rendered during the period. Only the service cost component will be eligible for capitalization. Additionally, the ASU requires that companies present the other components of the net periodic benefit cost separately from the line item that includes the service cost and outside of any subtotal of Income from Operations. This ASU is effective for annual periods beginning after December 15, 2017. The amendments in the ASU are to be applied retrospectively for presentation in the Condensed Consolidated Statements of Income and prospectively for the capitalization of the service cost component of net periodic pension cost and net periodic post retirement benefit. A practical expedient allows the Company to use the amount disclosed for net periodic benefit costs for the prior comparative periods as the estimation basis for applying the retrospective presentation requirements. The Company retrospectively adopted the ASU on December 31, 2017. As a result of adopting the ASU, non-service cost related net periodic benefit income of $0.2 million and $0.3 million and non-service cost related net periodic benefit costs of $0.4 million and $0.7 million were reclassified from Cost of Sales and Operating Expenses, respectively, to Other Expenses, net for the three and six month period ended July 1, 2017, respectively, on the Condensed Consolidated Statements of Income to conform to the current year presentation using the practical expedient allowed under this ASU. In February 2016, the FASB issued ASU 2016-02, Leases. The core principle of ASU 2016-02 is that an entity should recognize assets and liabilities arising from a lease on its balance sheet. In accordance with that principle, ASU 2016-02 requires that a lessee recognize a liability to make lease payments, the lease liability, and a right-of-use asset representing its right to use the underlying leased asset for the lease term. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee will depend on the lease classification as a finance or operating lease. In July 2018, the FASB amended its guidance by issuing ASU 2018-11 to provide an additional transition method, allowing a cumulative effect adjustment to the opening balance of retained earnings during the period of adoption. The amendment will also allow lessors the option to make a policy election to treat lease and non-lease components as a single lease component under certain conditions. The Company is currently evaluating its options related to this update. The new lease standard is effective for fiscal years beginning after December 15, 2018 and early adoption is permitted. The Company expects the new lease standard to increase its total assets and liabilities, however, it is currently evaluating the magnitude of the impact. The Company is currently evaluating the impact on its Condensed Consolidated Statements of Income. The Company formed a team to implement the new lease standard and is working with its third-party software program to upload information to track and store its leases. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606), a comprehensive new revenue recognition standard that supersedes current revenue recognition requirements. This update requires the Company to recognize revenue at amounts that reflect the consideration to which the Company expects to be entitled in exchange for those goods or services at the time of transfer. The new standard also requires additional qualitative and quantitative disclosures about contracts with customers, significant judgments made in applying the revenue guidance, and assets recognized from the costs to obtain or fulfill a contract. The Company adopted ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), and its related updates, effective December 31, 2017 using the modified retrospective approach. Results for reporting periods beginning after December 30, 2017 are presented under ASC 606, while prior period amounts are not adjusted and continue to be reported in accordance with the Company’s historic accounting under ASC 605. The majority of the Company’s sales are recognized when products are shipped from its manufacturing or distribution facilities to customers. For a limited number of contracts, the Company recognized revenue over time in proportion to costs incurred. Under the new standard, the Company continues to recognize revenue at a single point-in-time when control is transferred to the customer. In addition, for those contracts in which the Company recognizes revenue over time, the cost-to-cost measure of progress continues to best depict the transfer of control of assets to the customer, which occurs as the Company incurs costs. The Company completed a comprehensive assessment of ASC 606 and its potential impacts on the Company and concluded that as a result of applying the modified retrospective method, the cumulative effect adjustment to Retained Earnings as of December 31, 2017, was immaterial. Consequently, the Company did not record an adjustment for such a cumulative effect to Retained Earnings. Further, the impact of adopting the new revenue standard does not have a material impact on the Company’s pattern of revenue recognition, results of operations, or financial position. The Company has also completed the process of updating accounting policies, evaluating new disclosure requirements, and identifying and implementing changes to its business processes, systems and controls to support revenue recognition and disclosure under the new guidance.

BASIS OF PRESENTATION

The accompanying (a) Condensed Consolidated Balance Sheet of Regal Beloit Corporation (the “Company”) as of December 30, 2017, which has been derived from audited Consolidated Financial Statements, and (b) unaudited interim Condensed Consolidated Financial Statements as of June 30, 2018 and for the six months ended June 30, 2018 and July 1, 2017, have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and note disclosures normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"), have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading.

It is suggested that these Condensed Consolidated Financial Statements be read in conjunction with the Consolidated Financial Statements and the Notes thereto included in the Company’s 2017 Annual Report on Form 10-K filed on February 27, 2018.

In the opinion of management, all adjustments considered necessary for a fair presentation of financial results have been made. Except as otherwise discussed, such adjustments consist of only those of a normal recurring nature. Operating results for the three and six months ended June 30, 2018 are not necessarily indicative of the results that may be expected for the entire fiscal year ending December 29, 2018.

The Condensed Consolidated Financial Statements have been prepared in accordance with GAAP, which requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the Condensed Consolidated Financial Statements and revenues and expenses during the periods reported. Actual results could differ from those estimates. The Company uses estimates in accounting for, among other items, allowance for doubtful accounts; excess and obsolete inventory; share-based compensation; acquisitions; product warranty obligations; pension and post retirement assets and liabilities; derivative fair values; goodwill and other asset impairments; health care reserves; retirement benefits; rebates and incentives; litigation claims and contingencies, including environmental matters; and income taxes. The Company accounts for changes to estimates and assumptions when warranted by factually based experience.

The Company operates on a 52/53 week fiscal year ending on the Saturday closest to December 31.

New Accounting Standards

In February 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220), Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This ASU addresses the income tax effects of items in Accumulated Other Comprehensive Loss (“AOCI”) which were originally recognized in other comprehensive income, rather than in income from continuing operations. Specifically, it permits a reclassification from AOCI to Retained Earnings for the adjustment of deferred taxes due to the reduction of the historical corporate income tax rate to the newly enacted corporate income tax rate resulting from the US tax law changes enacted in December 2017. It also requires certain disclosures about these reclassifications. This ASU is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years, with early adoption permitted. The new guidance must be applied either on a prospective basis in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the US federal corporate income tax rate in the US tax law changes are recognized. The Company has elected to early adopt this standard as of April 1, 2018. During the second quarter, the Company has elected to reclassify the stranded effects from the US tax law changes from AOCI to Retained Earnings on a prospective basis. As a result of the adoption of ASU 2018-02, the Company has reclassified $4.6 million from AOCI to Retained Earnings. The adoption did not have a material impact on the Company's Condensed Consolidated Financial Statements. See Note 4 of Notes to Condensed Consolidated Financial Statements for a breakout of the impact by component.

In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815) - Targeted Improvements to Accounting for Hedging Activities. The amendments in this update better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. The ASU is effective for annual periods beginning after December 15, 2018, and interim periods within those annual periods. Early adoption is permitted. The Company plans to adopt this pronouncement for its fiscal year beginning December 30, 2018. The Company is currently evaluating the impact of the pending adoption of this standard on its Condensed Consolidated Financial Statements.

In May 2017, the FASB issued ASU 2017-09, Stock Compensation - Scope of Modification Accounting. The ASU amends the scope of modification accounting for share-based payment arrangements. The ASU provides guidance on the types of changes to the terms or conditions of share-based payment awards to which an entity would be required to apply modification accounting under Accounting Standards Codification ("ASC") 718. Specifically, an entity would not apply modification accounting if the fair value, vesting conditions, and classification of the awards are the same immediately before and after the modification. The ASU is effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods. Prospective application is required. The Company prospectively adopted ASU 2017-09 for its fiscal year beginning on December 31, 2017 and it did not have a material impact on the Company's Condensed Consolidated Financial Statements.

In February 2017, the FASB issued ASU 2017-07, Compensation - Retirement Benefits: Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The ASU requires companies to present the service cost component of net periodic benefit cost in the same income statement line item as other compensation costs arising from services rendered during the period. Only the service cost component will be eligible for capitalization. Additionally, the ASU requires that companies present the other components of the net periodic benefit cost separately from the line item that includes the service cost and outside of any subtotal of Income from Operations. This ASU is effective for annual periods beginning after December 15, 2017. The amendments in the ASU are to be applied retrospectively for presentation in the Condensed Consolidated Statements of Income and prospectively for the capitalization of the service cost component of net periodic pension cost and net periodic post retirement benefit. A practical expedient allows the Company to use the amount disclosed for net periodic benefit costs for the prior comparative periods as the estimation basis for applying the retrospective presentation requirements. The Company retrospectively adopted the ASU on December 31, 2017. As a result of adopting the ASU, non-service cost related net periodic benefit income of $0.2 million and $0.3 million and non-service cost related net periodic benefit costs of $0.4 million and $0.7 million were reclassified from Cost of Sales and Operating Expenses, respectively, to Other Expenses, net for the three and six month period ended July 1, 2017, respectively, on the Condensed Consolidated Statements of Income to conform to the current year presentation using the practical expedient allowed under this ASU.

In February 2016, the FASB issued ASU 2016-02, Leases. The core principle of ASU 2016-02 is that an entity should recognize assets and liabilities arising from a lease on its balance sheet. In accordance with that principle, ASU 2016-02 requires that a lessee recognize a liability to make lease payments, the lease liability, and a right-of-use asset representing its right to use the underlying leased asset for the lease term. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee will depend on the lease classification as a finance or operating lease. In July 2018, the FASB amended its guidance by issuing ASU 2018-11 to provide an additional transition method, allowing a cumulative effect adjustment to the opening balance of retained earnings during the period of adoption. The amendment will also allow lessors the option to make a policy election to treat lease and non-lease components as a single lease component under certain conditions. The Company is currently evaluating its options related to this update. The new lease standard is effective for fiscal years beginning after December 15, 2018 and early adoption is permitted. The Company expects the new lease standard to increase its total assets and liabilities, however, it is currently evaluating the magnitude of the impact. The Company is currently evaluating the impact on its Condensed Consolidated Statements of Income. The Company formed a team to implement the new lease standard and is working with its third-party software program to upload information to track and store its leases.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606), a comprehensive new revenue recognition standard that supersedes current revenue recognition requirements. This update requires the Company to recognize revenue at amounts that reflect the consideration to which the Company expects to be entitled in exchange for those goods or services at the time of transfer. The new standard also requires additional qualitative and quantitative disclosures about contracts with customers, significant judgments made in applying the revenue guidance, and assets recognized from the costs to obtain or fulfill a contract. The Company adopted ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), and its related updates, effective December 31, 2017 using the modified retrospective approach. Results for reporting periods beginning after December 30, 2017 are presented under ASC 606, while prior period amounts are not adjusted and continue to be reported in accordance with the Company’s historic accounting under ASC 605.

The majority of the Company’s sales are recognized when products are shipped from its manufacturing or distribution facilities to customers. For a limited number of contracts, the Company recognized revenue over time in proportion to costs incurred. Under the new standard, the Company continues to recognize revenue at a single point-in-time when control is transferred to the customer. In addition, for those contracts in which the Company recognizes revenue over time, the cost-to-cost measure of progress continues to best depict the transfer of control of assets to the customer, which occurs as the Company incurs costs.

The Company completed a comprehensive assessment of ASC 606 and its potential impacts on the Company and concluded that as a result of applying the modified retrospective method, the cumulative effect adjustment to Retained Earnings as of December 31, 2017, was immaterial. Consequently, the Company did not record an adjustment for such a cumulative effect to Retained Earnings. Further, the impact of adopting the new revenue standard does not have a material impact on the Company’s pattern of revenue recognition, results of operations, or financial position. The Company has also completed the process of updating accounting policies, evaluating new disclosure requirements, and identifying and implementing changes to its business processes, systems and controls to support revenue recognition and disclosure under the new guidance.