| In millions, except per share items | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K/A | 10-K | 10-K |
| Net sales | 1,141.8 | 1,074.0 | 1,205.7 | 1,274.1 | 1,101.4 | 1,187.7 | 1,204.4 | 1,219.3 |
| Net sales growth | 6.3% | -10.9% | -5.4% | 15.7% | -7.3% | -1.4% | -1.2% | 6.6% |
| Cost of sales | 705.2 | 698.2 | 801.9 | 855.6 | 716.0 | 791.9 | 808.9 | 802.6 |
| Gross profit | 436.6 | 375.8 | 403.8 | 418.5 | 385.4 | 395.8 | 395.5 | 416.7 |
| Gross margin | 38.2% | 35.0% | 33.5% | 32.8% | 35.0% | 33.3% | 32.8% | 34.2% |
| |
| Operating expenses: | | | | | | | | |
| Selling, general and administrative | 336.3 | 299.8 | 314.9 | 311.6 | 298.3 | 302.7 | 302.8 | 319.5 |
| Goodwill impairment | | | | | | | | |
| Other | 6.0 | 50.1 | 32.3 | 21.1 | 16.9 | 15.6 | 8.1 | 3.8 |
| Total operating expenses | 690.8 | 754.3 | 729.7 | 689.6 | 637.2 | 398.3 | 724.2 | 353.3 |
| Operating income (loss) | 94.3 | 25.9 | 56.6 | 85.8 | 70.2 | -2.5 | 37.6 | 63.4 |
| Operating margin | 8.3% | 2.4% | 4.7% | 6.7% | 6.4% | -0.2% | 3.1% | 5.2% |
| Interest expense | -16.3 | -16.5 | -19.6 | -28.5 | -50.9 | -55.9 | -52.8 | -45.1 |
| Interest income | 2.6 | 1.6 | 1.4 | 1.2 | 1.5 | 0.8 | 0.7 | 1.0 |
| Other expense | 131.8 | -37.8 | -34.1 | 30.0 | 0.5 | -11.1 | -4.1 | 13.3 |
| Income tax benefit (expense) | -34.8 | 3.5 | 3.5 | -19.8 | -28.1 | 28.6 | -2.3 | -10.6 |
| Income from discontinued operations, including gain on sale, net of tax | | 208.1 | 30.5 | 0.0 | 21.9 | | | |
| |
| Less: net income (loss) attributable to redeemable non-controlling interests | | | | | | | | |
| Net income (loss) attributable to EnPro Industries, Inc. | 177.2 | 184.4 | 38.3 | 19.6 | 0.0 | -40.1 | -20.9 | 22.0 |
| |
| Comprehensive income | | | | | | | | |
| Less: comprehensive loss attributable to redeemable non-controlling interests | | | | | | | | |
| Comprehensive income attributable to EnPro Industries, Inc. | | | | | | | | -26.5 |
| |
| Income attributable to EnPro Industries, Inc. common shareholders: | | | | | | | | |
| Income (loss) from continuing operations, net of tax | 177.2 | -23.7 | 7.8 | -4.7 | 517.9 | -40.1 | -20.9 | 22.0 |
| Net income (loss) attributable to EnPro Industries, Inc. | 177.2 | 184.4 | 38.3 | 19.6 | 0.0 | -40.1 | -20.9 | 22.0 |
| |
| Basic earnings (loss) per share attributable to EnPro Industries, Inc.: | | | | | | | | |
| Continuing operations (in dollars per share) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | | |
| Discontinued operations (in dollars per share) | | 0.0 | 0.0 | 0.0 | 0.0 | | | |
| |
| Net income (loss) per share (in dollars per share) | $8.60 | $8.98 | $1.86 | $0.94 | $25.28 | ($1.86) | ($0.93) | $0.95 |
| |
| Diluted earnings (loss) per share attributable to EnPro Industries, Inc.: | | | | | | | | |
| Continuing operations (in dollars per share) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | | |
| Discontinued operations (in dollars per share) | | 0.0 | 0.0 | 0.0 | 0.0 | | | |
| Net income (loss) per share (in dollars per share) | $8.53 | $8.98 | $1.85 | $0.94 | $24.76 | ($1.86) | ($0.93) | $0.85 |