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Business Segments - Business Segment Information (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Business Segment Information |  |
Net sales | $ 8,851 | $ 8,075
Operating Income | 1,994 | 1,663
Gain/(loss) on sale of businesses |  | 2
Total operating expenses | 6,857 | 6,412
Other expense (income), net | 49 | 75
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest | 1,945 | 1,588
Safety and Industrial |  |
Business Segment Information |  |
Net sales | 3,327 | 2,927
Operating Income | 811 | 694
Transportation and Electronics |  |
Business Segment Information |  |
Net sales | 2,531 | 2,239
Operating Income | 591 | 464
Health Care |  |
Business Segment Information |  |
Net sales | 2,248 | 2,104
Operating Income | 509 | 452
Consumer |  |
Business Segment Information |  |
Net sales | 1,373 | 1,250
Operating Income | 289 | 265
Business Segments. |  |
Business Segment Information |  |
Operating Income | 2,041 | 1,762
Corporate and Unallocated |  |
Business Segment Information |  |
Net sales | (2) |
Significant litigation-related (charges)/benefits |  | (17)
Gain/(loss) on sale of businesses |  | 2
Other corporate expense - net | (47) | (84)
Total operating expenses | (47) | (99)
Elimination of Dual Credit |  |
Business Segment Information |  |
Net sales | (626) | (445)
Operating Income | $ (159) | $ (113)

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