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CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Statement [Abstract] |  |  |
Revenue | $ 6,992,118 | $ 6,820,886 | $ 6,043,224
Cost of goods and services | 4,432,562 | 4,291,839 | 3,815,672
Gross profit | 2,559,556 | 2,529,047 | 2,227,552
Selling, general and administrative expenses | 1,716,444 | 1,722,161 | 1,518,580
Operating earnings | 843,112 | 806,886 | 708,972
Interest expense | 130,972 | 144,948 | 135,969
Interest income | (8,881) | (8,491) | (6,752)
Gain on sale of businesses | 0 | (203,135) | (96,598)
Other expense (income), net | (4,357) | (2,251) | (8,291)
Earnings before provision for income taxes and discontinued operations | 725,378 | 875,815 | 684,644
Provision for income taxes | 134,233 | 129,152 | 182,516
Earnings from continuing operations | 591,145 | 746,663 | 502,128
(Loss) earnings from discontinued operations, net | (20,878) | 65,002 | 6,764
Net earnings | $ 570,267 | $ 811,665 | $ 508,892
Earnings per share from continuing operations [Abstract] |  |  |
Earnings from continuing operations (in dollars per basic share) | $ 3.94 | $ 4.80 | $ 3.23
Earnings from continuing operations (in dollars per diluted share) | 3.89 | 4.73 | 3.21
Earnings per share from discontinued operations [Abstract] |  |  |
Earnings from discontinued operations, net (in dollars per basic share) | (0.14) | 0.42 | 0.04
Earnings (loss) from discontinued operations, net (in dollars per diluted share) | (0.14) | 0.41 | 0.04
Net earnings per share [Abstract] |  |  |
Net earnings (in dollars per basic share) | 3.80 | 5.21 | 3.28
Net earnings (in dollars per diluted share) | $ 3.75 | $ 5.15 | $ 3.25
Weighted average shares outstanding - basic (in shares) | 149,874,000 | 155,685,000 | 155,231,000
Weighted average shares outstanding - diluted (in shares) | 152,133,000 | 157,744,000 | 156,636,000

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