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Business Segment Information (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2019 USD ($) segment | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of business segments | segment |  |  |  |  |  |  |  |  | 2 |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total assets | $ 3,061.8 |  |  |  | $ 2,715.4 |  |  |  | $ 3,061.8 | $ 2,715.4 |
Total property, plant and equipment, net | 435.8 |  |  |  | 420.8 |  |  |  | 435.8 | 420.8 |
Operating lease right-of-use assets | 245.4 |  |  |  | 0.0 |  |  |  | 245.4 | 0.0 |
Net sales | 871.3 | $ 821.0 | $ 722.8 | $ 690.9 | 676.1 | $ 729.5 | $ 659.9 | $ 637.4 | 3,106.0 | 2,702.9 | $ 2,700.6
Inter-segment royalty expense (income) |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Gross profit | 386.4 | 360.6 | 313.4 | 281.8 | 283.2 | 300.0 | 272.8 | 264.7 | 1,342.2 | 1,120.7 | 1,121.0
Operating income (loss) | 84.6 | $ 120.6 | $ 81.0 | $ 60.5 | 57.9 | $ 84.7 | $ 58.0 | $ 55.7 | 346.7 | 256.3 | 295.5
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 265.5 | 165.0 | 215.4
Depreciation and amortization |  |  |  |  |  |  |  |  | 116.5 | 111.9 | 94.0
Capital expenditures |  |  |  |  |  |  |  |  | 88.2 | 73.6 | 66.6
Bedding sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 2,455.3 | 2,473.4
Other sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 247.6 | 227.2
United States |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment, net | 366.4 |  |  |  | 350.7 |  |  |  | 366.4 | 350.7 |
Operating lease right-of-use assets | 198.3 |  |  |  | 0.0 |  |  |  | 198.3 | 0.0 |
Net sales |  |  |  |  |  |  |  |  |  |  | 1,954.2
Canada |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment, net | 17.5 |  |  |  | 19.1 |  |  |  | 17.5 | 19.1 |
Operating lease right-of-use assets | 4.9 |  |  |  | 0.0 |  |  |  | 4.9 | 0.0 |
Net sales |  |  |  |  |  |  |  |  |  |  | 219.6
Other International |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment, net | 51.9 |  |  |  | 51.0 |  |  |  | 51.9 | 51.0 |
Operating lease right-of-use assets | 42.2 |  |  |  | 0.0 |  |  |  | 42.2 | 0.0 |
Net sales |  |  |  |  |  |  |  |  |  |  | 526.8
Total International |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment, net | 69.4 |  |  |  | 70.1 |  |  |  | 69.4 | 70.1 |
Operating lease right-of-use assets | 47.1 |  |  |  | 0.0 |  |  |  | 47.1 | 0.0 |
Net sales |  |  |  |  |  |  |  |  | 793.7 | 774.0 | 746.4
Operating Segments |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 3,106.0 | 2,702.9 |
Operating Segments | Bedding sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 2,835.3 | 2,455.3 |
Operating Segments | Other sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 270.7 | 247.6 |
Operating Segments | United States |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 2,312.3 | 1,928.9 |
Operating Segments | Canada |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 221.0 | 207.3 |
Operating Segments | Other International |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 566.7 |
Operating Segments | North America |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment, net | 328.9 |  |  |  | 317.5 |  |  |  | 328.9 | 317.5 |
Operating lease right-of-use assets | 202.0 |  |  |  | 0.0 |  |  |  | 202.0 | 0.0 |
Net sales |  |  |  |  |  |  |  |  | 2,533.3 | 2,136.2 | 2,173.8
Inter-segment royalty expense (income) |  |  |  |  |  |  |  |  | 4.5 | 3.1 | 5.5
Gross profit |  |  |  |  |  |  |  |  | 1,035.2 | 823.4 | 844.7
Operating income (loss) |  |  |  |  |  |  |  |  | 344.8 | 250.0 | 273.2
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 337.0 | 241.1 | 276.0
Depreciation and amortization |  |  |  |  |  |  |  |  | 64.4 | 59.0 | 51.4
Capital expenditures |  |  |  |  |  |  |  |  | 62.1 | 52.7 | 39.9
Operating Segments | North America | Bedding sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 2,379.6 | 2,002.1 | 2,051.8
Operating Segments | North America | Other sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 153.7 | 134.1 | 122.0
Operating Segments | North America | United States |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 2,312.3 | 1,928.9 |
Operating Segments | North America | Canada |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 221.0 | 207.3 |
Operating Segments | International |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment, net | 51.8 |  |  |  | 51.1 |  |  |  | 51.8 | 51.1 |
Operating lease right-of-use assets | 42.2 |  |  |  | 0.0 |  |  |  | 42.2 | 0.0 |
Net sales |  |  |  |  |  |  |  |  | 572.7 | 566.7 | 526.8
Inter-segment royalty expense (income) |  |  |  |  |  |  |  |  | (4.5) | (3.1) | (5.5)
Gross profit |  |  |  |  |  |  |  |  | 307.0 | 297.3 | 276.3
Operating income (loss) |  |  |  |  |  |  |  |  | 115.4 | 107.5 | 112.0
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 109.7 | 101.0 | 104.5
Depreciation and amortization |  |  |  |  |  |  |  |  | 13.7 | 13.5 | 14.1
Capital expenditures |  |  |  |  |  |  |  |  | 11.6 | 14.0 | 9.0
Operating Segments | International | Bedding sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 455.7 | 453.2 | 421.6
Operating Segments | International | Other sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 117.0 | 113.5 | 105.2
Corporate |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment, net | 55.1 |  |  |  | 52.2 |  |  |  | 55.1 | 52.2 |
Operating lease right-of-use assets | 1.2 |  |  |  | 0.0 |  |  |  | 1.2 | 0.0 |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Inter-segment royalty expense (income) |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Gross profit |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Operating income (loss) |  |  |  |  |  |  |  |  | (113.5) | (101.2) | (89.7)
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | (181.2) | (177.1) | (165.1)
Depreciation and amortization |  |  |  |  |  |  |  |  | 38.4 | 39.4 | 28.5
Capital expenditures |  |  |  |  |  |  |  |  | 14.5 | 6.9 | 17.7
Corporate | Bedding sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Corporate | Other sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Inter-segment eliminations |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | (4.1) | (3.9) | (4.8)
Inter-segment eliminations | North America |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 3.4 | 3.4 | 3.8
Inter-segment eliminations | International |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.7 | 0.5 | $ 1.0
Continuing Operations | Operating Segments | North America |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total assets | 3,142.9 |  |  |  | 2,788.1 |  |  |  | 3,142.9 | 2,788.1 |
Continuing Operations | Operating Segments | International |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total assets | 615.3 |  |  |  | 604.8 |  |  |  | 615.3 | 604.8 |
Continuing Operations | Corporate |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total assets | 477.1 |  |  |  | 569.0 |  |  |  | 477.1 | 569.0 |
Continuing Operations | Inter-segment eliminations |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total assets | $ (1,173.5) |  |  |  | $ (1,246.5) |  |  |  | $ (1,173.5) | $ (1,246.5) |

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