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Basis of presentation (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2020 USD ($) $ / $ | Dec. 31, 2019 USD ($) $ / $ | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) $ / $ | Jun. 30, 2020 USD ($) segment $ / $ | Jun. 30, 2019 USD ($) $ / $ | Dec. 31, 2019 USD ($) $ / $ | Mar. 31, 2020 USD ($) | [1] | Jan. 01, 2020 USD ($) | Mar. 31, 2019 USD ($) | [2] | Jan. 01, 2019 USD ($) | Dec. 31, 2018 $ / $
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of operating segments | segment |  |  |  |  | 3 |  |  |  |  |  |  |
Net monetary assets | $ 1,675,100,000 | $ 1,232,600,000 |  |  | $ 1,675,100,000 |  | $ 1,232,600,000 |  |  |  |  |
Cash and cash equivalents | 531,300,000 | 311,000,000.0 |  |  | 531,300,000 |  | 311,000,000.0 |  |  |  |  |
Goodwill | 1,114,000,000.0 | 784,600,000 |  |  | 1,114,000,000.0 |  | 784,600,000 |  |  |  |  |
Revenues | 826,000,000.0 |  |  | $ 914,000,000.0 | 1,698,800,000 | $ 1,819,000,000.0 |  |  |  |  |  |
Provision for doubtful accounts | 43,500,000 | 30,200,000 |  |  | 43,500,000 |  | 30,200,000 |  |  |  |  |
Restricted cash | 171,500,000 | 158,000,000.0 |  |  | 171,500,000 |  | 158,000,000.0 |  |  |  |  |
Right-of-use assets, net | $ 329,800,000 | $ 270,300,000 |  |  | $ 329,800,000 |  | $ 270,300,000 |  |  |  |  |
Cumulative effect of change in accounting principle |  |  |  |  |  |  |  | $ (1,700,000) |  | $ 0 |  |
Argentina, Pesos | Argentina |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Percent of Consolidated Revenue |  |  |  |  | 5.00% | 6.00% |  |  |  |  |  |
Rate decrease percent | 15.00% | 37.00% |  | 12.00% | 15.00% | 12.00% | 37.00% |  |  |  |  |
Official exchange rate | $ / $ | 70.4 | 59.9 |  | 42.6 | 70.4 | 42.6 | 59.9 |  |  |  |  | 37.6
Net remeasurement loss |  |  |  |  | $ (3,500,000) | $ 3,400,000 |  |  |  |  |  |
Net monetary assets | $ 25,000,000.0 |  |  |  | 25,000,000.0 |  |  |  |  |  |  |
Cash and cash equivalents | 21,100,000 |  |  |  | 21,100,000 |  |  |  |  |  |  |
Nonmonetary assets | 149,200,000 |  |  |  | 149,200,000 |  |  |  |  |  |  |
Goodwill | 99,800,000 |  |  |  | 99,800,000 |  |  |  |  |  |  |
Equity Securities | 0 |  |  |  | 0 |  |  |  |  |  |  |
Retained Earnings |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cumulative effect of change in accounting principle |  |  |  |  |  |  |  | $ (1,700,000) |  | $ 28,800,000 |  |
Accounting Standards Update 2016-02 |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Right-of-use assets, net |  |  |  |  |  |  |  |  |  |  | $ 310,100,000 |
Lease liabilities |  |  |  |  |  |  |  |  |  |  | 320,300,000 |
Accounting Standards Update 2018-02 | Retained Earnings |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cumulative effect of change in accounting principle |  |  |  |  |  |  |  |  |  |  | $ 28,800,000 |
Accounting Standards Update 2016-13 | Retained Earnings |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cumulative effect of change in accounting principle |  |  |  |  |  |  |  |  | $ 1,700,000 |  |  |
Internal Loss AR Rebuild |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Third-party expense |  |  |  |  | 200,000 |  | $ 4,500,000 |  |  |  |  |
Revenues |  |  | $ 4,000,000.0 |  |  |  |  |  |  |  |  |
Bank fees |  |  | 300,000 |  |  |  |  |  |  |  |  |
Increase to bad debt expense |  | $ 6,400,000 | $ 13,700,000 |  | 10,600,000 |  |  |  |  |  |  |
Provision for doubtful accounts | 21,600,000 |  |  |  | 21,600,000 |  |  |  |  |  |  |
Accounts receivable | $ 25,000,000.0 |  |  |  | $ 25,000,000.0 |  |  |  |  |  |  |
Percent of Accounts Receivable | 86.00% |  |  |  | 86.00% |  |  |  |  |  |  |
FRANCE |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | $ 86,700,000 |  |  |  | $ 86,700,000 |  |  |  |  |  |  |
Percentage of Fair Value in Excess of Carrying Amount | 8.00% |  |  |  | 8.00% |  |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Fair Value in Excess of Carrying Amount | 21.00% |  |  |  | 21.00% |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Fair Value in Excess of Carrying Amount | 199.00% |  |  |  | 199.00% |  |  |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restricted cash | $ 5,000,000.0 |  |  |  | $ 5,000,000.0 |  |  |  |  |  |  |
[1] | Effective January 1, 2020, we adopted the provisions of ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. We recognized a cumulative effect adjustment to January 1, 2020 retained earnings as a result of adopting this standard. See Note 1 for further details.
[2] | Effective January 1, 2019, we adopted the provisions of ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. We recognized a cumulative effect adjustment to January 1, 2019 retained earnings as a result of adopting this standard. See Note 1 for further details.

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