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Business Segment Information (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Sep. 30, 2017 USD ($) | Jun. 30, 2017 USD ($) | Mar. 31, 2017 USD ($) | Dec. 31, 2018 USD ($) segment | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of business segments | segment |  |  |  |  |  |  |  |  | 2 |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total assets | $ 2,715.4 |  |  |  | $ 2,694.0 |  |  |  | $ 2,715.4 | $ 2,694.0 |
Total property, plant and equipment, net | 420.8 |  |  |  | 433.5 |  |  |  | 420.8 | 433.5 |
Net sales | 676.1 | $ 729.5 | $ 659.9 | $ 637.4 | 631.4 | $ 711.5 | $ 647.3 | $ 710.4 | 2,702.9 | 2,700.6 | $ 3,079.7
Inter-segment royalty expense (income) |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Gross profit | 283.2 | 300.0 | 272.8 | 264.7 | 267.9 | 307.0 | 264.1 | 282.0 | 1,120.7 | 1,121.0 | 1,289.5
Operating income (loss) | 57.9 | $ 84.7 | $ 58.0 | $ 55.7 | 82.4 | $ 97.3 | $ 56.5 | $ 59.3 | 256.3 | 295.5 | 413.4
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 165.0 | 215.4 | 283.6
Depreciation and amortization |  |  |  |  |  |  |  |  | 111.9 | 94.0 | 88.6
Capital expenditures |  |  |  |  |  |  |  |  | 73.6 | 66.6 | 61.9
Bedding sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 2,473.4 | 2,847.7
Other sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 227.2 | 232.0
United States |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment, net | 350.7 |  |  |  | 373.2 |  |  |  | 350.7 | 373.2 |
Net sales |  |  |  |  |  |  |  |  |  | 1,954.2 | 2,361.9
Canada |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment, net | 19.1 |  |  |  | 7.2 |  |  |  | 19.1 | 7.2 |
Net sales |  |  |  |  |  |  |  |  |  | 219.6 | 208.2
Other International |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment, net | 51.0 |  |  |  | 53.1 |  |  |  | 51.0 | 53.1 |
Net sales |  |  |  |  |  |  |  |  |  | 526.8 | 509.6
Total International |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment, net | 70.1 |  |  |  | 60.3 |  |  |  | 70.1 | 60.3 |
Net sales |  |  |  |  |  |  |  |  | 774.0 | 746.4 | 717.8
Operating Segments |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 2,702.9 |  |
Operating Segments | United States |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,928.9 |  |
Operating Segments | Canada |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 207.3 |  |
Operating Segments | North America |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment, net | 317.5 |  |  |  | 320.0 |  |  |  | 317.5 | 320.0 |
Net sales |  |  |  |  |  |  |  |  | 2,136.2 | 2,173.8 | 2,570.1
Inter-segment royalty expense (income) |  |  |  |  |  |  |  |  | 3.1 | 5.5 | (7.2)
Gross profit |  |  |  |  |  |  |  |  | 823.4 | 844.7 | 1,017.4
Operating income (loss) |  |  |  |  |  |  |  |  | 250.0 | 273.2 | 411.8
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 241.1 | 276.0 | 406.8
Depreciation and amortization |  |  |  |  |  |  |  |  | 59.0 | 51.4 | 43.7
Capital expenditures |  |  |  |  |  |  |  |  | 52.7 | 39.9 | 32.8
Operating Segments | North America | Bedding sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 2,051.8 | 2,447.8
Operating Segments | North America | Other sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 122.0 | 122.3
Operating Segments | North America | United States |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,928.9 |  |
Operating Segments | North America | Canada |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 207.3 |  |
Operating Segments | International |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment, net | 51.1 |  |  |  | 53.1 |  |  |  | 51.1 | 53.1 |
Net sales |  |  |  |  |  |  |  |  | 566.7 | 526.8 | 509.6
Inter-segment royalty expense (income) |  |  |  |  |  |  |  |  | (3.1) | (5.5) | 7.2
Gross profit |  |  |  |  |  |  |  |  | 297.3 | 276.3 | 272.1
Operating income (loss) |  |  |  |  |  |  |  |  | 107.5 | 112.0 | 100.6
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 101.0 | 104.5 | 94.3
Depreciation and amortization |  |  |  |  |  |  |  |  | 13.5 | 14.1 | 14.7
Capital expenditures |  |  |  |  |  |  |  |  | 14.0 | 9.0 | 14.8
Operating Segments | International | Bedding sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 421.6 | 399.9
Operating Segments | International | Other sales |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 105.2 | 109.7
Corporate |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total property, plant and equipment, net | 52.2 |  |  |  | 60.4 |  |  |  | 52.2 | 60.4 |
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) |  |  |  |  |  |  |  |  | (101.2) | (89.7) | (99.0)
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | (177.1) | (165.1) | (217.5)
Depreciation and amortization |  |  |  |  |  |  |  |  | 39.4 | 28.5 | 30.2
Capital expenditures |  |  |  |  |  |  |  |  | 6.9 | 17.7 | 14.3
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 |  |  |  |  |  |  |  |  | (3.9) | (4.8) | (4.9)
Inter-segment eliminations | North America |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 3.4 | 3.8 | 4.5
Inter-segment eliminations | International |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.5 | 1.0 | $ 0.4
Customer Concentration Risk | Sales Revenue |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Concentration risk, percentage |  |  |  |  |  |  |  |  |  |  | 21.70%
Continuing Operations | Operating Segments | North America |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total assets | 2,788.1 |  |  |  | 2,771.9 |  |  |  | 2,788.1 | 2,771.9 |
Continuing Operations | Operating Segments | International |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total assets | 604.8 |  |  |  | 593.8 |  |  |  | 604.8 | 593.8 |
Continuing Operations | Corporate |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total assets | 569.0 |  |  |  | 614.9 |  |  |  | 569.0 | 614.9 |
Continuing Operations | Inter-segment eliminations |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total assets | (1,246.5) |  |  |  | (1,302.2) |  |  |  | (1,246.5) | (1,302.2) |
Discontinued Operations |  |  |  |  |  |  |  |  |  |  |
Segment information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total assets | $ 0.0 |  |  |  | $ 15.6 |  |  |  | $ 0.0 | $ 15.6 |

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