SEGMENT INFORMATION Graingers two reportable segments are the U.S. and Canada. These reportable segments reflect the results of the Company's high-touch solutions businesses in those geographies. Other businesses include the endless assortment businesses, Zoro Tools, Inc. (Zoro) and MonotaRO Co. (MonotaRO), and smaller high-tough solutions businesses in Europe and Mexico. These businesses individually do not meet the criteria of a reportable segment. Operating segments generate revenue almost exclusively through the distribution of MRO supplies, as service revenues account for approximately 1% of total revenues for each operating segment. The accounting policies of the segments are the same as those described in the summary of significant accounting policies. Intersegment transfer prices are established at external selling prices, less costs not incurred due to a related party sale. The segment results include certain centrally incurred costs for shared services that are charged to the segments based upon the relative level of service used by each operating segment. Following is a summary of segment results (in millions of dollars): 2019 United States Canada Total Reportable Segments Other businesses Total Total net sales $ 8,815 $ 529 $ 9,344 $ 2,651 $ 11,995 Intersegment net sales (505 )  (505 ) (4 ) (509 ) Net sales to external customers $ 8,310 $ 529 $ 8,839 $ 2,647 11,486 Segment operating earnings $ 1,391 $ 3 $ 1,394 $ (9 ) $ 1,385 2018 United States Canada Total Reportable Segments Other businesses Total Total net sales $ 8,588 $ 653 $ 9,241 $ 2,441 $ 11,682 Intersegment net sales (457 )  (457 ) (4 ) (461 ) Net sales to external customers $ 8,131 $ 653 $ 8,784 $ 2,437 $ 11,221 Segment operating earnings $ 1,338 $ (49 ) $ 1,289 $ 8 $ 1,297 2017 United States Canada Total Reportable Segments Other businesses Total Total net sales $ 7,960 $ 753 $ 8,713 $ 2,120 $ 10,833 Intersegment net sales (404 )  (404 ) (4 ) (408 ) Net sales to external customers $ 7,556 $ 753 $ 8,309 $ 2,116 $ 10,425 Segment operating earnings $ 1,200 $ (77 ) $ 1,123 $ 56 $ 1,179 Following are reconciliations of the segment information with the consolidated totals per the Financial Statements (in millions of dollars): 2019 2018 2017 Operating earnings: Total operating earnings for reportable segments $ 1,394 $ 1,289 $ 1,123 Other businesses (9 ) 8 56 Unallocated expenses (123 ) (139 ) (144 ) Total consolidated operating earnings $ 1,262 $ 1,158 $ 1,035 Assets: United States $ 2,668 $ 2,496 $ 2,310 Canada 173 188 279 Assets for reportable segments $ 2,841 $ 2,684 $ 2,589 Other current and noncurrent assets 3,003 2,879 3,033 Unallocated assets 161 310 182 Total consolidated assets $ 6,005 $ 5,873 $ 5,804 Depreciation and amortization: United States $ 148 $ 166 $ 169 Canada 17 19 19 Depreciation and amortization for reportable segments $ 165 $ 185 $ 188 Other businesses and unallocated 45 49 53 Total consolidated depreciation and amortization $ 210 $ 234 $ 241 Additions to long-lived assets United States $ 168 $ 200 $ 187 Canada 9 7 8 Additions to long-lived assets for reportable segments $ 177 $ 207 $ 195 Other businesses and unallocated 72 39 67 Total consolidated additions to long-lived assets $ 249 $ 246 $ 262 Following are revenue and long-lived assets by geographic location (in millions of dollars): 2019 2018 2017 Revenue by geographic location: United States $ 8,865 $ 8,613 $ 7,948 Canada 539 658 761 Other foreign countries 2,082 1,950 1,716 $ 11,486 $ 11,221 $ 10,425 Long-lived segment assets by geographic location: United States $ 1,268 $ 1,140 $ 1,098 Canada 152 136 199 Other foreign countries 327 202 247 $ 1,747 $ 1,478 $ 1,544 The Company is a broad-line distributor of MRO products and services. Products are regularly added and deleted from the Company's inventory. Accordingly, it would be impractical to provide sales information by product category due to the way the business is managed. Unallocated amounts include corporate-level support and administrative expenses, corporate-level assets consisting primarily of cash, property, buildings and equipment and intersegment eliminations and other adjustments. Unallocated expenses and assets are not included in any reportable segment. Assets for reportable segments include net accounts receivable and first-in, first-out inventory, which are reported to the Company's Chief Operating Decision Maker. Long-lived assets consist of property, buildings, equipment, capitalized software and ROU assets of $ 223 million as of December 31, 2019. Depreciation and amortization presented above includes depreciation of long-lived assets and amortization of capitalized software.