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v3.10.0.1

Segment information - Summary of Operations by Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 760.9 | $ 688.3 | $ 667.4 | $ 708.4 | $ 744.8 | $ 666.3 | $ 666.2 | $ 664.5 | $ 2,825.0 | $ 2,741.8 |  | $ 2,820.7 |
Operating income (loss) |  |  |  |  |  |  |  |  | 284.1 | 97.1 | [1] | 129.2 | [1]
Depreciation and amortization |  |  |  |  |  |  |  |  | 164.1 | 156.5 |  | 155.6 |
Total assets | 2,457.6 |  |  |  | 2,542.4 |  |  |  | 2,457.6 | 2,542.4 |  | 2,021.6 |
Capital expenditures |  |  |  |  |  |  |  |  | 189.3 | 176.5 |  | 147.1 |
Intersegment |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | (24.7) | (25.9) |  | (22.6) |
Operating Segments |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income (loss) |  |  |  |  |  |  |  |  | 305.4 | 235.4 |  | 208.4 |
Total assets | 1,436.6 |  |  |  | 1,364.5 |  |  |  | 1,436.6 | 1,364.5 |  | 1,339.0 |
Corporate |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | (24.7) | (25.9) |  | (22.6) |
Operating income (loss) |  |  |  |  |  |  |  |  | (21.3) | (138.3) |  | (79.2) |
Total assets | 1,021.0 |  |  |  | 1,177.9 |  |  |  | 1,021.0 | 1,177.9 |  | 682.6 |
Capital expenditures |  |  |  |  |  |  |  |  | 8.0 | 4.3 |  | 3.0 |
Services |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 2,386.3 | 2,328.2 |  | 2,406.3 |
Operating income (loss) |  |  |  |  |  |  |  |  | 67.6 | 64.8 |  | 46.9 |
Depreciation and amortization |  |  |  |  |  |  |  |  | 97.2 | 84.6 |  | 81.8 |
Total assets | 1,013.1 |  |  |  | 985.9 |  |  |  | 1,013.1 | 985.9 |  | 963.3 |
Capital expenditures |  |  |  |  |  |  |  |  | 92.9 | 102.7 |  | 74.8 |
Services | Intersegment |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0.0 | 0.0 |  | 0.0 |
Services | Operating Segments |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 2,386.3 | 2,328.2 |  | 2,406.3 |
Technology |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 438.7 | 413.6 |  | 414.4 |
Operating income (loss) |  |  |  |  |  |  |  |  | 237.8 | 170.6 |  | 161.5 |
Depreciation and amortization |  |  |  |  |  |  |  |  | 66.9 | 71.9 |  | 73.8 |
Total assets | $ 423.5 |  |  |  | $ 378.6 |  |  |  | 423.5 | 378.6 |  | 375.7 |
Capital expenditures |  |  |  |  |  |  |  |  | 88.4 | 69.5 |  | 69.3 |
Technology | Intersegment |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 24.7 | 25.9 |  | 22.6 |
Technology | Operating Segments |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | $ 463.4 | $ 439.5 |  | $ 437.0 |
[1] | Amounts were changed to conform to the current-year presentation. See Note 2.

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