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Segment Data - Segment Information (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from Services | $ 4,953.9 | $ 4,972.5 | $ 4,861.3 | $ 4,542.2 | $ 5,121.1 | $ 5,416.0 | $ 5,321.7 | $ 4,904.0 | $ 19,329.9 | $ 20,762.8 | $ 20,250.5
Operating Unit Profit |  |  |  |  |  |  |  |  | 832.7 | 859.1 | 639.2
Intangible asset amortization expense |  |  |  |  |  |  |  |  | (32.8) | (33.4) | (34.1)
Interest and other expenses |  |  |  |  |  |  |  |  | (28.2) | (38.3) | (36.4)
Earnings before income taxes |  |  |  |  |  |  |  |  | 660.7 | 681.6 | 475.5
Franchise fees |  |  |  |  |  |  |  |  | 24.2 | 25.4 | 24.4
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  | 77.7 | 83.8 | 94.3
Earnings from Equity Investments |  |  |  |  |  |  |  |  | 8.0 | 3.0 | 7.2
Total Assets | 7,517.5 |  |  |  | 7,181.2 |  |  |  | 7,517.5 | 7,181.2 | 7,286.6
Equity Investments | 137.9 |  |  |  | 132.3 |  |  |  | 137.9 | 132.3 | 140.2
Long-Lived Assets | 152.2 |  |  |  | 154.4 |  |  |  | 152.2 | 154.4 | 170.6
Reportable segments | Americas |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from Services |  |  |  |  |  |  |  |  | 4,492.0 | 4,583.7 | 4,510.2
Operating Unit Profit |  |  |  |  |  |  |  |  | 200.8 | 181.6 | 143.7
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  | 12.2 | 13.5 | 16.8
Earnings from Equity Investments |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Total Assets | 2,013.4 |  |  |  | 1,816.8 |  |  |  | 2,013.4 | 1,816.8 | 1,743.2
Equity Investments | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 | 0.0 | 3.0
Long-Lived Assets | 33.3 |  |  |  | 33.7 |  |  |  | 33.3 | 33.7 | 36.2
Reportable segments | Americas | United States | Reportable subsegments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from Services |  |  |  |  |  |  |  |  | 3,005.8 | 3,086.4 | 2,967.0
Operating Unit Profit |  |  |  |  |  |  |  |  | 143.8 | 125.4 | 99.8
Franchise fees |  |  |  |  |  |  |  |  | 15.2 | 16.1 | 15.2
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  | 9.3 | 9.4 | 12.3
Earnings from Equity Investments |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Total Assets | 1,708.5 |  |  |  | 1,532.7 |  |  |  | 1,708.5 | 1,532.7 | 1,476.3
Equity Investments | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 | 0.0 | 3.0
Long-Lived Assets | 26.0 |  |  |  | 25.4 |  |  |  | 26.0 | 25.4 | 25.8
Reportable segments | Americas | Other Americas | Reportable subsegments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from Services |  |  |  |  |  |  |  |  | 1,486.2 | 1,497.3 | 1,543.2
Operating Unit Profit |  |  |  |  |  |  |  |  | 57.0 | 56.2 | 43.9
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  | 2.9 | 4.1 | 4.5
Earnings from Equity Investments |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Total Assets | 304.9 |  |  |  | 284.1 |  |  |  | 304.9 | 284.1 | 266.9
Equity Investments | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 | 0.0 | 0.0
Long-Lived Assets | 7.3 |  |  |  | 8.3 |  |  |  | 7.3 | 8.3 | 10.4
Reportable segments | Southern Europe |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from Services |  |  |  |  |  |  |  |  | 6,871.9 | 7,509.7 | 7,237.0
Operating Unit Profit |  |  |  |  |  |  |  |  | 354.8 | 361.7 | 264.6
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  | 14.3 | 17.6 | 18.9
Earnings from Equity Investments |  |  |  |  |  |  |  |  | 0.4 | 0.4 | 0.3
Total Assets | 2,431.5 |  |  |  | 2,371.1 |  |  |  | 2,431.5 | 2,371.1 | 2,377.7
Equity Investments | 0.2 |  |  |  | 0.9 |  |  |  | 0.2 | 0.9 | 0.4
Long-Lived Assets | 55.7 |  |  |  | 60.4 |  |  |  | 55.7 | 60.4 | 73.1
Reportable segments | Southern Europe | France | Reportable subsegments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from Services |  |  |  |  |  |  |  |  | 4,661.3 | 5,351.6 | 5,284.9
Operating Unit Profit |  |  |  |  |  |  |  |  | 258.8 | 275.5 | 198.9
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  | 10.1 | 13.0 | 14.1
Earnings from Equity Investments |  |  |  |  |  |  |  |  | 0.4 | 0.4 | 0.3
Total Assets | 1,926.3 |  |  |  | 1,922.7 |  |  |  | 1,926.3 | 1,922.7 | 1,950.3
Equity Investments | 0.0 |  |  |  | 0.7 |  |  |  | 0.0 | 0.7 | 0.4
Long-Lived Assets | 39.2 |  |  |  | 44.6 |  |  |  | 39.2 | 44.6 | 56.3
Reportable segments | Southern Europe | Italy | Reportable subsegments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from Services |  |  |  |  |  |  |  |  | 1,226.1 | 1,178.8 | 1,087.6
Operating Unit Profit |  |  |  |  |  |  |  |  | 70.9 | 64.2 | 53.8
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  | 1.9 | 2.4 | 2.6
Earnings from Equity Investments |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Total Assets | 267.1 |  |  |  | 230.0 |  |  |  | 267.1 | 230.0 | 218.3
Equity Investments | 0.2 |  |  |  | 0.2 |  |  |  | 0.2 | 0.2 | 0.0
Long-Lived Assets | 4.7 |  |  |  | 4.7 |  |  |  | 4.7 | 4.7 | 6.5
Reportable segments | Southern Europe | Other Southern Europe | Reportable subsegments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from Services |  |  |  |  |  |  |  |  | 984.5 | 979.3 | 864.5
Operating Unit Profit |  |  |  |  |  |  |  |  | 25.1 | 22.0 | 11.9
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  | 2.3 | 2.2 | 2.2
Earnings from Equity Investments |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Total Assets | 238.1 |  |  |  | 218.4 |  |  |  | 238.1 | 218.4 | 209.1
Equity Investments | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 | 0.0 | 0.0
Long-Lived Assets | 11.8 |  |  |  | 11.1 |  |  |  | 11.8 | 11.1 | 10.3
Reportable segments | Northern Europe |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from Services |  |  |  |  |  |  |  |  | 5,453.3 | 6,048.1 | 5,738.8
Operating Unit Profit |  |  |  |  |  |  |  |  | 159.5 | 198.1 | 139.7
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  | 9.8 | 11.2 | 14.0
Earnings from Equity Investments |  |  |  |  |  |  |  |  | 7.6 | 2.6 | 6.9
Total Assets | 1,444.2 |  |  |  | 1,862.6 |  |  |  | 1,444.2 | 1,862.6 | 1,951.8
Equity Investments | 137.7 |  |  |  | 131.1 |  |  |  | 137.7 | 131.1 | 136.5
Long-Lived Assets | 32.9 |  |  |  | 29.0 |  |  |  | 32.9 | 29.0 | 30.6
Reportable segments | APME |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from Services |  |  |  |  |  |  |  |  | 2,239.1 | 2,327.1 | 2,447.7
Operating Unit Profit |  |  |  |  |  |  |  |  | 79.3 | 84.2 | 70.8
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  | 4.7 | 4.4 | 4.8
Earnings from Equity Investments |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Total Assets | 533.7 |  |  |  | 501.4 |  |  |  | 533.7 | 501.4 | 466.7
Equity Investments | 0.0 |  |  |  | 0.3 |  |  |  | 0.0 | 0.3 | 0.3
Long-Lived Assets | 19.4 |  |  |  | 20.6 |  |  |  | 19.4 | 20.6 | 19.2
Reportable segments | Right Management |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from Services |  |  |  |  |  |  |  |  | 273.6 | 294.2 | 316.8
Operating Unit Profit |  |  |  |  |  |  |  |  | 38.3 | 33.5 | 20.4
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  | 3.7 | 3.6 | 4.3
Earnings from Equity Investments |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Total Assets | 143.9 |  |  |  | 139.1 |  |  |  | 143.9 | 139.1 | 134.4
Equity Investments | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 | 0.0 | 0.0
Long-Lived Assets | 10.5 |  |  |  | 10.6 |  |  |  | 10.5 | 10.6 | 11.3
Corporate |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Corporate expenses |  |  |  |  |  |  |  |  | (111.0) | (105.8) | (93.2)
Depreciation and Amortization Expense |  |  |  |  |  |  |  |  | 0.2 | 0.1 | 1.4
Total Assets | 950.8 |  |  |  | 490.2 |  |  |  | 950.8 | 490.2 | 612.8
Long-Lived Assets | $ 0.4 |  |  |  | $ 0.1 |  |  |  | 0.4 | 0.1 | 0.2
Additions to Long-Lived Assets |  |  |  |  |  |  |  |  | 0.4 | 0.0 | 0.0
Segment reconciling items |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Intangible asset amortization expense |  |  |  |  |  |  |  |  | (32.8) | (33.4) | (34.1)
Interest and other expenses |  |  |  |  |  |  |  |  | (28.2) | (38.3) | (36.4)
Additions to Long-Lived Assets |  |  |  |  |  |  |  |  | 52.3 | 52.0 | 44.7
Segment reconciling items | Americas |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additions to Long-Lived Assets |  |  |  |  |  |  |  |  | 12.5 | 13.0 | 10.8
Segment reconciling items | Americas | United States |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additions to Long-Lived Assets |  |  |  |  |  |  |  |  | 10.1 | 9.1 | 6.0
Segment reconciling items | Americas | Other Americas |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additions to Long-Lived Assets |  |  |  |  |  |  |  |  | 2.4 | 3.9 | 4.8
Segment reconciling items | Southern Europe |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additions to Long-Lived Assets |  |  |  |  |  |  |  |  | 16.8 | 13.9 | 16.3
Segment reconciling items | Southern Europe | France |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additions to Long-Lived Assets |  |  |  |  |  |  |  |  | 10.3 | 7.8 | 10.7
Segment reconciling items | Southern Europe | Italy |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additions to Long-Lived Assets |  |  |  |  |  |  |  |  | 2.4 | 1.3 | 1.9
Segment reconciling items | Southern Europe | Other Southern Europe |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additions to Long-Lived Assets |  |  |  |  |  |  |  |  | 4.1 | 4.8 | 3.7
Segment reconciling items | Northern Europe |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additions to Long-Lived Assets |  |  |  |  |  |  |  |  | 13.4 | 13.6 | 8.8
Segment reconciling items | APME |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additions to Long-Lived Assets |  |  |  |  |  |  |  |  | 4.5 | 7.9 | 4.3
Segment reconciling items | Right Management |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additions to Long-Lived Assets |  |  |  |  |  |  |  |  | $ 4.7 | $ 3.6 | $ 4.5

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