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Recent Accounting Pronouncements (Tables) | 6 Months Ended
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Jun. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] |
| Six Months Ended June 30, 2017
(in millions) | As Previously Reported |  | Adoption of ASU 2016-18 |  | As Adjusted
Net cash provided by operating activities | $ | 171.1 |  |  | $ | (2.7 | ) |  | $ | 168.4 |
Cash, cash equivalents and restricted cash, beginning of period | $ | 48.7 |  |  | $ | 34.3 |  |  | $ | 83.0 |
Net decrease in cash, cash equivalents and restricted cash | (7.5 | ) |  | (2.7 | ) |  | (10.2 | )
Effect of exchange rate changes on cash | 0.6 |  |  | — |  |  | 0.6 |
Cash, cash equivalents and restricted cash, end of period | $ | 41.8 |  |  | $ | 31.6 |  |  | $ | 73.4 |
| At June 30, 2018
(in millions) | As Reported |  | Balances without Adoption of ASC 606 |  | Effect of Change Increase/(Decrease)
ASSETS |  |  |  |  |
Accounts receivable, net | $ | 37.3 |  |  | $ | 38.0 |  |  | $ | (0.7 | )
Other assets | 13.1 |  |  | 14.9 |  |  | (1.8 | )
LIABILITIES |  |  |  |  |
Accrued expense | 95.2 |  |  | 94.4 |  |  | 0.8 |
Income taxes payable | 24.5 |  |  | 24.3 |  |  | 0.2 |
Current deferred revenue | 13.6 |  |  | 15.4 |  |  | (1.8 | )
Non-current deferred revenue | 21.1 |  |  | 23.6 |  |  | (2.5 | )
Deferred income taxes | 48.6 |  |  | 48.4 |  |  | 0.2 |
SHAREHOLDERS' EQUITY |  |  |  |  |
Retained earnings | 448.1 |  |  | 447.5 |  |  | 0.6 |
(in millions) | As Reported at December 31, 2017 |  | Adoption of ASC 606 |  | Balance at January 1, 2018
ASSETS |  |  |  |  |
Accounts receivable, net | $ | 49.6 |  |  | $ | (21.8 | ) |  | $ | 27.8 |
Income taxes receivable | 35.6 |  |  | (4.1 | ) |  | 31.5 |
Current assets of discontinued operations held for sale | 69.1 |  |  | 0.7 |  |  | 69.8 |
Other assets | 13.6 |  |  | (1.1 | ) |  | 12.5 |
LIABILITIES |  |  |  |  |
Accrued expense | 75.8 |  |  | 0.8 |  |  | 76.6 |
Current deferred revenue | 70.9 |  |  | (18.9 | ) |  | 52.0 |
Current liabilities of discontinued operations held for sale | 188.2 |  |  | (38.8 | ) |  | 149.4 |
Non-current deferred revenue | 29.3 |  |  | (4.5 | ) |  | 24.8 |
Deferred income taxes | 40.6 |  |  | (0.1 | ) |  | 40.5 |
Non-current liabilities of discontinued operations held for sale | 54.8 |  |  | 5.5 |  |  | 60.3 |
SHAREHOLDERS' EQUITY |  |  |  |  |
Retained earnings | 634.3 |  |  | 29.7 |  |  | 664.0 |

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