Restructuring and Acquisition Related Expenses (Notes)	12 Months Ended
Restructuring and Acquisition Related Expenses (Notes)	Dec. 31, 2019
Restructuring and Related Activities [Abstract]
Restructuring and Acquisition Related Expenses	Restructuring and Acquisition Related Expenses Acquisition Related Expenses Acquisition related expenses, which include external costs such as legal, accounting and advisory fees, were $2 million for the year ended December 31, 2019. Acquisition related expenses for the year ended December 31, 2018 were $18 million, which included external costs primarily related to our May 2018 acquisition of Stahlgruber. Acquisition related expenses totaled $15 million for the year ended December 31, 2017. Acquisition related expenses for 2017 included $5 million of costs for our acquisition of Andrew Page, primarily related to legal and other professional fees associated with the CMA review. The remaining acquisition related costs for the year ended December 31, 2017 consisted of external costs for (i) completed acquisitions, (ii) pending acquisitions as of December 31, 2017, including $4 million related to Stahlgruber, and (iii) potential acquisitions that were terminated. 2019 Global Restructuring Program In the second quarter of 2019, we began implementing a cost reduction initiative, covering all three of our reportable segments, designed to eliminate underperforming assets and cost inefficiencies. We have incurred and expect to incur costs for inventory write-downs, employee severance and other expenditures related to employee terminations; lease exit costs, such as lease termination fees, accelerated amortization of operating lease assets and impairment of operating lease assets; other costs related to facility exits, such as moving expenses to relocate inventory and equipment; and accelerated depreciation of fixed assets to be disposed earlier than the end of the previously estimated useful lives. During the year ended December 31, 2019, we incurred $37 million of restructuring expenses primarily related to inventory write-downs, employee-related costs and facility exit costs. Of these expenses, $17 million, primarily related to branch consolidation and brand rationalization within our Andrew Page operations, was recorded within Cost of goods sold in the Consolidated Statement of Income during the year ended December 31, 2019, and $20 million was recorded within Restructuring and acquisition related expenses. We currently expect to incur additional expenses of between $5 million and $10 million through the end of 2020 to complete the program. Acquisition Integration Plans During the year ended December 31, 2019, we incurred $18 million of restructuring expenses primarily related to our acquisition integration efforts in our Europe segment. These expenses included $14 million related to the integration of our acquisition of Andrew Page, including $4 million within Cost of goods sold in the Consolidated Statement of Income. During the year ended December 31, 2018, we incurred $14 million of restructuring expenses. Expenses incurred during the year ended December 31, 2018 primarily consisted of $10 million related to the integration of our acquisition of Andrew Page and $3 million related to our Specialty segment. These integration activities included the closure of duplicate facilities and termination of employees. During the year ended December 31, 2017, we incurred $5 million of restructuring expenses. Expenses incurred during the year ended December 31, 2017 were primarily a result of our ongoing integration activities in our North America and Specialty segments. Expenses incurred were primarily related to facility closure and the merger of existing facilities into larger distribution centers. We expect to incur additional expenses related to the integration of certain of our acquisitions into our existing operations in 2020. These integration activities are expected to include the closure of duplicate facilities, rationalization of personnel in connection with the consolidation of overlapping facilities with our existing business, and moving expenses. Future expenses to complete these integration plans are expected to be less than $5 million. 1 LKQ Europe Program In September 2019, we announced a multi-year program called "1 LKQ Europe," which is intended to create structural centralization and standardization of key functions to facilitate the operation of the Europe segment as a single business. Under the 1 LKQ Europe program, we will reorganize our non-customer-facing teams and support systems through various projects including the implementation of a common ERP platform, rationalization of our product portfolio, and creation of a Europe headquarters office and central back office. We currently expect to incur between $45 million and $55 million in personnel and inventory related restructuring charges through 2024 as a result of executing the 1 LKQ Europe program. In future periods, we may identify additional initiatives and projects under the 1 LKQ Europe program that may result in additional restructuring expense, although we are currently unable to estimate the range of charges for such potential future initiatives and projects.