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CONDENSED CONSOLIDATED INCOME STATEMENTS (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Condensed Financial Information [Line Items] |  |
Revenues | $ 1,961,267 | $ 1,993,915
Cost of goods sold | 1,578,771 | 1,613,966
Selling, general and administrative expense | 296,528 | 290,829
Depreciation and amortization | 15,242 | 15,879
Provision for income taxes | 11,656 | 10,487
Net income (loss) | 41,950 | 42,971
Less: Net (loss) income attributable to noncontrolling interest | (419) | (1,450)
Net income (loss) attributable to WESCO International, Inc. | 42,369 | 44,421
Comprehensive Income: |  |
Foreign currency translation adjustment | 22,517 | (28,800)
Comprehensive income attributable to WESCO International, Inc. | 64,886 | 15,621
Parent Company [Member] |  |
Condensed Financial Information [Line Items] |  |
Revenues | 0 | 0
Cost of goods sold | 0 | 0
Selling, general and administrative expense | 0 | 0
Depreciation and amortization | 0 | 0
Income (Loss) from Subsidiaries, before Tax | 41,950 | 42,971
Other Nonoperating Income (Expense) | 0 | 0
Provision for income taxes | 0 | 0
Net income (loss) | 41,950 | 42,971
Less: Net (loss) income attributable to noncontrolling interest | 0 | 0
Net income (loss) attributable to WESCO International, Inc. | 41,950 | 42,971
Comprehensive Income: |  |
Foreign currency translation adjustment | 22,517 | (28,800)
Comprehensive income attributable to WESCO International, Inc. | 64,467 | 14,171
Non-Guarantor Subsidiaries [Member] |  |
Condensed Financial Information [Line Items] |  |
Revenues | 1,142,394 | 1,150,110
Cost of goods sold | 928,324 | 936,302
Selling, general and administrative expense | 144,099 | 140,347
Depreciation and amortization | 10,687 | 11,263
Income (Loss) from Subsidiaries, before Tax | 0 | 0
Other Nonoperating Income (Expense) | 5,086 | 5,967
Provision for income taxes | 11,785 | 11,031
Net income (loss) | 42,413 | 45,200
Less: Net (loss) income attributable to noncontrolling interest | (419) | (1,450)
Net income (loss) attributable to WESCO International, Inc. | 42,832 | 46,650
Comprehensive Income: |  |
Foreign currency translation adjustment | 22,517 | (28,800)
Comprehensive income attributable to WESCO International, Inc. | 65,349 | 17,850
Consolidated Entities [Member] |  |
Condensed Financial Information [Line Items] |  |
Revenues | 1,961,267 | 1,993,915
Cost of goods sold | 1,578,771 | 1,613,966
Selling, general and administrative expense | 296,528 | 290,829
Depreciation and amortization | 15,242 | 15,879
Income (Loss) from Subsidiaries, before Tax | 0 | 0
Other Nonoperating Income (Expense) | (17,120) | (19,783)
Provision for income taxes | 11,656 | 10,487
Net income (loss) | 41,950 | 42,971
Less: Net (loss) income attributable to noncontrolling interest | (419) | (1,450)
Net income (loss) attributable to WESCO International, Inc. | 42,369 | 44,421
Comprehensive Income: |  |
Foreign currency translation adjustment | 22,517 | (28,800)
Comprehensive income attributable to WESCO International, Inc. | 64,886 | 15,621
Guarantor Subsidiaries [Member] |  |
Condensed Financial Information [Line Items] |  |
Revenues | 857,982 | 882,399
Cost of goods sold | 689,556 | 716,258
Selling, general and administrative expense | 152,429 | 150,482
Depreciation and amortization | 4,555 | 4,616
Income (Loss) from Subsidiaries, before Tax | 42,413 | 45,200
Other Nonoperating Income (Expense) | (12,034) | (13,816)
Provision for income taxes | (129) | (544)
Net income (loss) | 41,950 | 42,971
Less: Net (loss) income attributable to noncontrolling interest | 0 | 0
Net income (loss) attributable to WESCO International, Inc. | 41,950 | 42,971
Comprehensive Income: |  |
Foreign currency translation adjustment | 22,517 | (28,800)
Comprehensive income attributable to WESCO International, Inc. | 64,467 | 14,171
Consolidation, Eliminations [Member] |  |
Condensed Financial Information [Line Items] |  |
Revenues | (39,109) | (38,594)
Cost of goods sold | (39,109) | (38,594)
Selling, general and administrative expense | 0 | 0
Depreciation and amortization | 0 | 0
Income (Loss) from Subsidiaries, before Tax | (84,363) | (88,171)
Other Nonoperating Income (Expense) | 0 | 0
Provision for income taxes | 0 | 0
Net income (loss) | (84,363) | (88,171)
Less: Net (loss) income attributable to noncontrolling interest | 0 | 0
Net income (loss) attributable to WESCO International, Inc. | (84,363) | (88,171)
Comprehensive Income: |  |
Foreign currency translation adjustment | (45,034) | 57,600
Comprehensive income attributable to WESCO International, Inc. | (129,397) | (30,571)
Pension Plan [Member] |  |
Condensed Financial Information [Line Items] |  |
Other Nonoperating Gains (Losses) | $ (300) | $ (500)

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