Basis of Presentation and Use of Estimates (Policies)	9 Months Ended
Sep. 24, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Use of Estimates	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and the accompanying notes. Actual results could differ from those estimates.
Accounting Standards Recently Adopted and Not Yet Adopted	Accounting Standards Recently Adopted In March 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-09 Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (ASU 2016-09). ASU 2016-09 amends the guidance on several aspects of accounting for share-based payment transactions, including income tax consequences, classification of awards as either equity or liabilities, accounting for forfeitures, and classification on the statement of cash flows. The Company adopted ASU 2016-09 on January 1, 2017. The Company elected to apply the amendments related to the classification of excess tax benefits on the statement of cash flows on a prospective basis, and prior periods were not adjusted. The adoption of ASU 2016-09 did not have a material impact on the Company's consolidated financial statements. In July 2015, the FASB issued ASU No. 2015-11 Inventory (Topic 330): Simplifying the Measurement of Inventory (ASU 2015-11). ASU 2015-11 simplifies the subsequent measurement of inventory by using only the lower of cost or net realizable value. ASU 2015-11 does not apply to inventory measured using the last-in, first-out method. The Company adopted ASU 2015-11 on January 1, 2017. The adoption of ASU 2015-11 did not have a material impact on the Company’s consolidated financial statements. Accounting Standards Not Yet Adopted In May 2014, the FASB issued ASU No. 2014-09 Revenue from Contracts with Customers (ASU 2014-09). ASU 2014-09 is a comprehensive new revenue recognition model that requires a company to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In August 2015, the FASB issued ASU No. 2015-14 Revenue from Contracts with Customers: Deferral of Effective Date (ASU 2015-14) to defer the effective date of the new revenue recognition standard by one year to fiscal years beginning after December 15, 2017 and interim periods therein. The guidance may be adopted using either a full retrospective or modified retrospective approach. The Company expects to adopt the new revenue recognition guidance using the modified retrospective method. The Company's efforts to evaluate the impact of the standard and to prepare for its adoption on January 1, 2018 are well underway. Based on the work completed to date (which includes the review of significant revenue sources), the Company expects the recognition of revenue for sales of motorcycles, parts and accessories and general merchandise products under the new revenue recognition guidance will occur at a point in time. Interest income, which makes up the vast majority of revenue in the Financial Services segment, is not within the scope of the new standard. The Company is also assessing its process for accumulating the required information for enhanced disclosures regarding the nature, amount, timing and uncertainty of revenue and cash flows arising from its contracts with customers. In January 2016, the FASB issued ASU No. 2016-01 Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities (ASU 2016-01). ASU 2016-01 enhances the existing financial instruments reporting model by modifying fair value measurement tools, simplifying impairment assessments for certain equity instruments and modifying overall presentation and disclosure requirements. The Company is required to adopt ASU 2016-01 for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017 on a prospective basis. The Company does not expect the adoption of ASU 2016-01 to have a material impact on its financial statements. In February 2016, the FASB issued ASU No. 2016-02 Leases (Topic 842) (ASU 2016-02). ASU 2016-02 amends the existing lease accounting model by requiring a lessee to recognize the rights and obligations resulting from certain leases as assets and liabilities on the balance sheet. ASU 2016-02 also requires a company to disclose key information about their leasing arrangements. The Company is required to adopt ASU 2016-02 for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018 using a modified retrospective approach. Early adoption is permitted. The Company is currently evaluating the impact of adoption of ASU 2016-02. In July 2016, the FASB issued ASU No. 2016-13 Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (ASU 2016-13). ASU 2016-13 changes how to recognize expected credit losses on financial assets. The standard requires a more timely recognition of credit losses on loans and other financial assets and also provides additional transparency about credit risk. The current credit loss standard generally requires that a loss actually be incurred before it is recognized, while the new standard will require recognition of full lifetime expected losses upon initial recognition of the financial instrument. The Company is required to adopt ASU 2016-13 for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2019 on a modified retrospective basis. Early adoption is permitted for fiscal years beginning after December 15, 2018. An entity should apply the standard by recording a cumulative effect adjustment to retained earnings upon adoption. Adoption of this standard will impact how the Company recognizes credit losses on its financial instruments. The Company is currently evaluating the impact of adoption of ASU 2016-13 but anticipates the adoption of ASU 2016-13 will result in an increase in the annual provision for credit losses and the related allowance for credit losses. In August 2016, the FASB issued ASU No. 2016-15 Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (ASU 2016-15). ASU 2016-15 addresses eight specific cash flow issues with the objective of reducing diversity in practice regarding how certain cash receipts and cash payments are presented in the statement of cash flows. The standard provides guidance on the classification of the following items: (1) debt prepayment or debt extinguishment costs, (2) settlement of zero-coupon debt instruments, (3) contingent consideration payments made after a business combination, (4) proceeds from the settlement of insurance claims, (5) proceeds from the settlement of corporate-owned life insurance policies, (6) distributions received from equity method investments, (7) beneficial interests in securitization transactions, and (8) separately identifiable cash flows. The Company is required to adopt ASU 2016-15 for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017 on a retrospective basis. Early adoption is permitted, including adoption in an interim period. The Company does not expect the adoption of ASU 2016-15 to have a material impact on its financial statements. In October 2016, the FASB issued ASU No. 2016-16 Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory (ASU 2016-16). ASU 2016-16 states that an entity should recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Two common assets included in the scope of the ASU are intellectual property and property, plant and equipment. The Company is required to adopt ASU 2016-16 for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017 using a modified retrospective approach with a cumulative-effect adjustment to retained earnings. The Company does not expect the adoption of ASU 2016-16 to have a material impact on its financial statements. In November 2016, the FASB issued ASU No. 2016-18 Statement of Cash Flows (Topic 230): Restricted Cash (ASU 2016-18). ASU 2016-18 requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents and amounts generally described as restricted cash or restricted cash equivalents. As such, restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The Company is required to adopt ASU 2016-18 for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017 on a retrospective basis. Early adoption is permitted, including adoption in an interim period. Subsequent to the adoption of ASU 2016-18, the change in restricted cash would be excluded from the change in cash flows from financing activities and included in the change in total cash, restricted cash and cash equivalents as reported in the statement of cash flows. In January 2017, the FASB issued ASU No. 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (ASU 2017-04). ASU 2017-04 simplifies the subsequent measurement of goodwill by eliminating the requirement to calculate the implied fair value of goodwill. Rather, the goodwill impairment is calculated by comparing the fair value of a reporting unit to its carrying value, and an impairment loss is recognized for the amount by which the carrying amount exceeds the fair value, limited to the total goodwill allocated to the reporting unit. All reporting units apply the same impairment test under the new standard. The Company is required to adopt ASU 2017-04 for its annual and any interim goodwill impairment tests in fiscal years beginning after December 15, 2019 on a prospective basis. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. In March 2017, the FASB issued ASU No. 2017-07 Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU 2017-07). ASU 2017-07 amends ASC 715, Compensation - Retirement Benefits by requiring employers to present the service cost component of net periodic benefit cost in the same income statement line item as other employee compensation costs arising from services rendered during the period. Other components of the net periodic benefit cost will be presented separately from the line item that includes the service cost and outside of any subtotal of operating income. The guidance also limits the components that are eligible for capitalization in assets. The Company is required to adopt ASU 2017-07 for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017. Early adoption is permitted as of the beginning of an annual period for which interim or annual financial statements have not been issued or made available for issuance. The amendments related to the presentation of the components of net periodic benefit cost should be applied retrospectively. The amendments related to the capitalization of certain components in assets should be applied prospectively. The Company's net periodic benefit cost components are disclosed in Note 14. In August 2017, the FASB issued ASU No. 2017-12 Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12). ASU 2017-12 amends ASC 815, Derivatives and Hedging to improve the financial reporting of hedging relationships and to simplify the application of the hedge accounting guidance. The ASU makes various updates to the hedge accounting model, including changing the recognition and presentation of changes in the fair value of the hedging instrument and amending disclosure requirements, among other things. The Company is required to adopt ASU 2017-12 for fiscal years beginning after December 15, 2018, and for interim periods within those fiscal years. Early adoption is permitted in any interim period after issuance of the ASU. For cash flow and net investment hedges existing at the date of adoption, the Company must apply a cumulative-effect adjustment as of the beginning of the fiscal year in which the standard is adopted. The amendments related to presentation and disclosure are required prospectively. The Company is currently evaluating the impact of adoption of ASU 2017-12.

Accounting Standards Recently Adopted

In March 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-09 Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (ASU 2016-09). ASU 2016-09 amends the guidance on several aspects of accounting for share-based payment transactions, including income tax consequences, classification of awards as either equity or liabilities, accounting for forfeitures, and classification on the statement of cash flows. The Company adopted ASU 2016-09 on January 1, 2017. The Company elected to apply the amendments related to the classification of excess tax benefits on the statement of cash flows on a prospective basis, and prior periods were not adjusted. The adoption of ASU 2016-09 did not have a material impact on the Company's consolidated financial statements.

In July 2015, the FASB issued ASU No. 2015-11 Inventory (Topic 330): Simplifying the Measurement of Inventory (ASU 2015-11). ASU 2015-11 simplifies the subsequent measurement of inventory by using only the lower of cost or net realizable value. ASU 2015-11 does not apply to inventory measured using the last-in, first-out method. The Company adopted ASU 2015-11 on January 1, 2017. The adoption of ASU 2015-11 did not have a material impact on the Company’s consolidated financial statements.

Accounting Standards Not Yet Adopted

In May 2014, the FASB issued ASU No. 2014-09 Revenue from Contracts with Customers (ASU 2014-09). ASU 2014-09 is a comprehensive new revenue recognition model that requires a company to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In August 2015, the FASB issued ASU No. 2015-14 Revenue from Contracts with Customers: Deferral of Effective Date (ASU 2015-14) to defer the effective date of the new revenue recognition standard by one year to fiscal years beginning after December 15, 2017 and interim periods therein. The guidance may be adopted using either a full retrospective or modified retrospective approach. The Company expects to adopt the new revenue recognition guidance using the modified retrospective method. The Company's efforts to evaluate the impact of the standard and to prepare for its adoption on January 1, 2018 are well underway. Based on the work completed to date (which includes the review of significant revenue sources), the Company expects the recognition of revenue for sales of motorcycles, parts and accessories and general merchandise products under the new revenue recognition guidance will occur at a point in time. Interest income, which makes up the vast majority of revenue in the Financial Services segment, is not within the scope of the new standard. The Company is also assessing its process for accumulating the required information for enhanced disclosures regarding the nature, amount, timing and uncertainty of revenue and cash flows arising from its contracts with customers.

In January 2016, the FASB issued ASU No. 2016-01 Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities (ASU 2016-01). ASU 2016-01 enhances the existing financial instruments reporting model by modifying fair value measurement tools, simplifying impairment assessments for certain equity instruments and modifying overall presentation and disclosure requirements. The Company is required to adopt ASU 2016-01 for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017 on a prospective basis. The Company does not expect the adoption of ASU 2016-01 to have a material impact on its financial statements.

In February 2016, the FASB issued ASU No. 2016-02 Leases (Topic 842) (ASU 2016-02). ASU 2016-02 amends the existing lease accounting model by requiring a lessee to recognize the rights and obligations resulting from certain leases as assets and liabilities on the balance sheet. ASU 2016-02 also requires a company to disclose key information about their leasing arrangements. The Company is required to adopt ASU 2016-02 for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018 using a modified retrospective approach. Early adoption is permitted. The Company is currently evaluating the impact of adoption of ASU 2016-02.

In July 2016, the FASB issued ASU No. 2016-13 Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (ASU 2016-13). ASU 2016-13 changes how to recognize expected credit losses on financial assets. The standard requires a more timely recognition of credit losses on loans and other financial assets and also provides additional transparency about credit risk. The current credit loss standard generally requires that a loss actually be incurred before it is recognized, while the new standard will require recognition of full lifetime expected losses upon initial recognition of the financial instrument. The Company is required to adopt ASU 2016-13 for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2019 on a modified retrospective basis. Early adoption is permitted for fiscal years beginning after December 15, 2018. An entity should apply the standard by recording a cumulative effect adjustment to retained earnings upon adoption. Adoption of this standard will impact how the Company recognizes credit losses on its financial instruments. The Company is currently evaluating the impact of adoption of ASU 2016-13 but anticipates the adoption of ASU 2016-13 will result in an increase in the annual provision for credit losses and the related allowance for credit losses.

In August 2016, the FASB issued ASU No. 2016-15 Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (ASU 2016-15). ASU 2016-15 addresses eight specific cash flow issues with the objective of reducing diversity in practice regarding how certain cash receipts and cash payments are presented in the statement of cash flows. The standard provides guidance on the classification of the following items: (1) debt prepayment or debt extinguishment costs, (2) settlement of zero-coupon debt instruments, (3) contingent consideration payments made after a business combination, (4) proceeds from the settlement of insurance claims, (5) proceeds from the settlement of corporate-owned life insurance policies, (6) distributions received from equity method investments, (7) beneficial interests in securitization transactions, and (8) separately identifiable cash flows. The Company is required to adopt ASU 2016-15 for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017 on a retrospective basis. Early adoption is permitted, including adoption in an interim period. The Company does not expect the adoption of ASU 2016-15 to have a material impact on its financial statements.

In October 2016, the FASB issued ASU No. 2016-16 Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory (ASU 2016-16). ASU 2016-16 states that an entity should recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Two common assets included in the scope of the ASU are intellectual property and property, plant and equipment. The Company is required to adopt ASU 2016-16 for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017 using a modified retrospective approach with a cumulative-effect adjustment to retained earnings. The Company does not expect the adoption of ASU 2016-16 to have a material impact on its financial statements.

In November 2016, the FASB issued ASU No. 2016-18 Statement of Cash Flows (Topic 230): Restricted Cash (ASU 2016-18). ASU 2016-18 requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents and amounts generally described as restricted cash or restricted cash equivalents. As such, restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The Company is required to adopt ASU 2016-18 for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017 on a retrospective basis. Early adoption is permitted, including adoption in an interim period. Subsequent to the adoption of ASU 2016-18, the change in restricted cash would be excluded from the change in cash flows from financing activities and included in the change in total cash, restricted cash and cash equivalents as reported in the statement of cash flows.

In January 2017, the FASB issued ASU No. 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (ASU 2017-04). ASU 2017-04 simplifies the subsequent measurement of goodwill by eliminating the requirement to calculate the implied fair value of goodwill. Rather, the goodwill impairment is calculated by comparing the fair value of a reporting unit to its carrying value, and an impairment loss is recognized for the amount by which the carrying amount exceeds the fair value, limited to the total goodwill allocated to the reporting unit. All reporting units apply the same impairment test under the new standard. The Company is required to adopt ASU 2017-04 for its annual and any interim goodwill impairment tests in fiscal years beginning after December 15, 2019 on a prospective basis. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017.

In March 2017, the FASB issued ASU No. 2017-07 Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU 2017-07). ASU 2017-07 amends ASC 715, Compensation - Retirement Benefits by requiring employers to present the service cost component of net periodic benefit cost in the same income statement line item as other employee compensation costs arising from services rendered during the period. Other components of the net periodic benefit cost will be presented separately from the line item that includes the service cost and outside of any subtotal of operating income. The guidance also limits the components that are eligible for capitalization in assets. The Company is required to adopt ASU 2017-07 for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017. Early adoption is permitted as of the beginning of an annual period for which interim or annual financial statements have not been issued or made available for issuance. The amendments related to the presentation of the components of net periodic benefit cost should be applied retrospectively. The amendments related to the capitalization of certain components in assets should be applied prospectively. The Company's net periodic benefit cost components are disclosed in Note 14.

In August 2017, the FASB issued ASU No. 2017-12 Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12). ASU 2017-12 amends ASC 815, Derivatives and Hedging to improve the financial reporting of hedging relationships and to simplify the application of the hedge accounting guidance. The ASU makes various updates to the hedge accounting model, including changing the recognition and presentation of changes in the fair value of the hedging instrument and amending disclosure requirements, among other things. The Company is required to adopt ASU 2017-12 for fiscal years beginning after December 15, 2018, and for interim periods within those fiscal years. Early adoption is permitted in any interim period after issuance of the ASU. For cash flow and net investment hedges existing at the date of adoption, the Company must apply a cumulative-effect adjustment as of the beginning of the fiscal year in which the standard is adopted. The amendments related to presentation and disclosure are required prospectively. The Company is currently evaluating the impact of adoption of ASU 2017-12.