Segment Information - Summary of Financial Information Concerning Reportable Segments (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | |
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018 |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | $ 285.1 | $ 302.3 | $ 559.6 | $ 594.7 | |
Interest, investment and other income, including realized gains and losses | 75.9 | 68.1 | 88.5 | 69.4 | |
Total revenues and other income | 361 | 370.4 | 648.1 | 664.1 | |
Depreciation and amortization | 13.3 | 14.9 | 27.2 | 29.2 | |
Interest expense | (5.5) | (0.2) | (9.2) | (3.2) | |
Earnings (loss) before income taxes and equity in losses of unconsolidated affiliates | 45.9 | (0.2) | 40.2 | (9.9) | |
Income tax (benefit) expense | 8.5 | 2.6 | 3.7 | (2.9) | |
Earnings (loss) before equity in losses of unconsolidated affiliates | 37.4 | (2.8) | 36.5 | (7) | |
Equity in earnings (losses) of unconsolidated affiliates | (22.4) | (19.6) | (19.5) | (20.7) | |
Net earnings (loss) | 15 | (22.4) | 17 | (27.7) | |
Assets | 1,872.4 | 1,359.9 | 1,872.4 | 1,359.9 | $ 1,459.5 |
Goodwill | 164.8 | 202 | 164.8 | 202 | $ 164.8 |
Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Goodwill | | | | | |
Ceridian and Dun & Bradstreet Elimination | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | (370.4) | (179) | (574.1) | (367.8) | |
Interest, investment and other income, including realized gains and losses | 0 | 0 | 0 | 0 | |
Total revenues and other income | (370.4) | (179) | (574.1) | (367.8) | |
Depreciation and amortization | (95.1) | (14.2) | (109.5) | (28.1) | |
Interest expense | 57.6 | 43.4 | 66.5 | 65.6 | |
Earnings (loss) before income taxes and equity in losses of unconsolidated affiliates | 102.9 | 52.4 | 86 | 44.4 | |
Income tax (benefit) expense | 28.1 | (1.2) | 22.4 | (7) | |
Earnings (loss) before equity in losses of unconsolidated affiliates | 74.8 | 53.6 | 63.6 | 51.4 | |
Equity in earnings (losses) of unconsolidated affiliates | (22.8) | (19.7) | (20.2) | (21.6) | |
Net earnings (loss) | 52 | 33.9 | 43.4 | 29.8 | |
Assets | (15,890.3) | (6,319.7) | (15,890.3) | (6,319.7) | |
Goodwill | (4,750.4) | (1,942.6) | (4,750.4) | (1,942.6) | |
Restaurant revenue | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 266.5 | 276.2 | 524.3 | 550 | |
Restaurant revenue | Ceridian and Dun & Bradstreet Elimination | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 0 | 0 | 0 | 0 | |
Other operating revenue | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 18.6 | 26.1 | 35.3 | 44.7 | |
Other operating revenue | Ceridian and Dun & Bradstreet Elimination | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | (370.4) | (179) | (574.1) | (367.8) | |
Restaurant Group | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 266.5 | 276.2 | 524.3 | 550 | |
Restaurant Group | Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 266.5 | 276.2 | 524.3 | 550 | |
Interest, investment and other income, including realized gains and losses | 2.8 | 1.4 | 3.5 | 1.4 | |
Total revenues and other income | 269.3 | 277.6 | 527.8 | 551.4 | |
Depreciation and amortization | 9.4 | 10.7 | 19.1 | 21.4 | |
Interest expense | (1.5) | (3.8) | (2.5) | (7.5) | |
Earnings (loss) before income taxes and equity in losses of unconsolidated affiliates | (11.6) | (5.9) | (19.7) | (15.2) | |
Income tax (benefit) expense | 0 | 0 | (0.1) | 0 | |
Earnings (loss) before equity in losses of unconsolidated affiliates | (11.6) | (5.9) | (19.6) | (15.2) | |
Equity in earnings (losses) of unconsolidated affiliates | 0 | 0 | 0 | 0.1 | |
Net earnings (loss) | (11.6) | (5.9) | (19.6) | (15.1) | |
Assets | 636.2 | 477.5 | 636.2 | 477.5 | |
Goodwill | 76.5 | 103.1 | 76.5 | 103.1 | |
Restaurant Group | Restaurant revenue | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 247.7 | 258.3 | 493 | 517.5 | |
Restaurant Group | Restaurant revenue | Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 266.5 | 276.2 | 524.3 | 550 | |
Restaurant Group | Other operating revenue | Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 0 | 0 | 0 | 0 | |
T-System | Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 12.9 | 14.8 | 25.1 | 30.2 | |
Interest, investment and other income, including realized gains and losses | (0.5) | 0 | (0.5) | 0 | |
Total revenues and other income | 12.4 | 14.8 | 24.6 | 30.2 | |
Depreciation and amortization | 3.4 | 3.7 | 6.9 | 7.3 | |
Interest expense | (1.4) | (1.5) | (2.8) | (1.5) | |
Earnings (loss) before income taxes and equity in losses of unconsolidated affiliates | (5) | (2.6) | (9.9) | (3.4) | |
Income tax (benefit) expense | (1.2) | (0.5) | (2.4) | (2.3) | |
Earnings (loss) before equity in losses of unconsolidated affiliates | (3.8) | (2.1) | (7.5) | (1.1) | |
Equity in earnings (losses) of unconsolidated affiliates | 0 | 0 | 0 | 0 | |
Net earnings (loss) | (3.8) | (2.1) | (7.5) | (1.1) | |
Assets | 202.9 | 221.9 | 202.9 | 221.9 | |
Goodwill | 88.3 | 98.9 | 88.3 | 98.9 | |
T-System | Restaurant revenue | Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 0 | 0 | 0 | 0 | |
T-System | Other operating revenue | Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 12.9 | 14.8 | 25.1 | 30.2 | |
Ceridian | Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 196.3 | 179 | 400 | 367.8 | |
Interest, investment and other income, including realized gains and losses | 0 | 0 | 0 | 0 | |
Total revenues and other income | 196.3 | 179 | 400 | 367.8 | |
Depreciation and amortization | 14.6 | 14.2 | 29 | 28.1 | |
Interest expense | (8.5) | (43.4) | (17.4) | (65.6) | |
Earnings (loss) before income taxes and equity in losses of unconsolidated affiliates | 8.7 | (52.4) | 25.6 | (44.4) | |
Income tax (benefit) expense | 2.4 | 1.2 | 8.1 | 7 | |
Earnings (loss) before equity in losses of unconsolidated affiliates | 6.3 | (53.6) | 17.5 | (51.4) | |
Equity in earnings (losses) of unconsolidated affiliates | 0 | 0 | 0 | 0 | |
Net earnings (loss) | 6.3 | (53.6) | 17.5 | (51.4) | |
Assets | 6,729.3 | 6,319.7 | 6,729.3 | 6,319.7 | |
Goodwill | 1,952.8 | 1,942.6 | 1,952.8 | 1,942.6 | |
Ceridian | Restaurant revenue | Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 0 | 0 | 0 | 0 | |
Ceridian | Other operating revenue | Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 196.3 | 179 | 400 | 367.8 | |
Dun And Bradstreet | Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 174.1 | | 174.1 | | |
Interest, investment and other income, including realized gains and losses | 0 | | 0 | | |
Total revenues and other income | 174.1 | | 174.1 | | |
Depreciation and amortization | 80.5 | | 80.5 | | |
Interest expense | (49.1) | | (49.1) | | |
Earnings (loss) before income taxes and equity in losses of unconsolidated affiliates | (111.6) | | (111.6) | | |
Income tax (benefit) expense | (30.5) | | (30.5) | | |
Earnings (loss) before equity in losses of unconsolidated affiliates | (81.1) | | (81.1) | | |
Equity in earnings (losses) of unconsolidated affiliates | 0 | | 0 | | |
Net earnings (loss) | (81.1) | | (81.1) | | |
Assets | 9,161 | | 9,161 | | |
Goodwill | 2,797.6 | | 2,797.6 | | |
Dun And Bradstreet | Restaurant revenue | Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 0 | | 0 | | |
Dun And Bradstreet | Other operating revenue | Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 174.1 | | 174.1 | | |
Corporate and Other | Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 5.7 | 11.3 | 10.2 | 14.5 | |
Interest, investment and other income, including realized gains and losses | 73.6 | 66.7 | 85.5 | 68 | |
Total revenues and other income | 79.3 | 78 | 95.7 | 82.5 | |
Depreciation and amortization | 0.5 | 0.5 | 1.2 | 0.5 | |
Interest expense | (2.6) | 5.1 | (3.9) | 5.8 | |
Earnings (loss) before income taxes and equity in losses of unconsolidated affiliates | 62.5 | 8.3 | 69.8 | 8.7 | |
Income tax (benefit) expense | 9.7 | 3.1 | 6.2 | (0.6) | |
Earnings (loss) before equity in losses of unconsolidated affiliates | 52.8 | 5.2 | 63.6 | 9.3 | |
Equity in earnings (losses) of unconsolidated affiliates | 0.4 | 0.1 | 0.7 | 0.8 | |
Net earnings (loss) | 53.2 | 5.3 | 64.3 | 10.1 | |
Assets | 1,033.3 | 660.5 | 1,033.3 | 660.5 | |
Goodwill | 0 | 0 | 0 | 0 | |
Corporate and Other | Restaurant revenue | Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | 0 | 0 | 0 | 0 | |
Corporate and Other | Other operating revenue | Operating Segments | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Revenues from external customers | $ 5.7 | $ 11.3 | $ 10.2 | $ 14.5 | |