Shareholders' Deficit - Summary of Changes in Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2022 |
Jun. 30, 2021 |
Jun. 30, 2022 |
Jun. 30, 2021 |
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| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||||||||||
| Beginning balance | $ (1,453.3) | $ (1,362.3) | $ (1,391.5) | $ (856.1) | ||||||||
| Amounts reclassified from accumulated other comprehensive loss to income, net of tax | (0.1) | [1] | 1.1 | [1] | (0.1) | [2] | 1.4 | [2] | ||||
| Total other comprehensive (loss) income | (33.1) | 12.7 | (31.3) | (10.1) | ||||||||
| Ending balance | (1,415.4) | (1,291.2) | (1,415.4) | (1,291.2) | ||||||||
| Foreign Currency Translation Adjustments [Member] | ||||||||||||
| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||||||||||
| Beginning balance | (207.2) | (202.1) | (211.6) | (178.4) | ||||||||
| Other comprehensive (loss) income before reclassifications, net of tax | (31.9) | 12.4 | (27.5) | (11.3) | ||||||||
| Amounts reclassified from accumulated other comprehensive loss to income, net of tax | 0.0 | [1] | 0.0 | [1] | 0.0 | [2] | 0.0 | [2] | ||||
| Total other comprehensive (loss) income | (31.9) | 12.4 | (27.5) | (11.3) | ||||||||
| Ending balance | (239.1) | (189.7) | (239.1) | (189.7) | ||||||||
| Unrealized (Loss) Gain on Derivatives [Member] | ||||||||||||
| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||||||||||
| Beginning balance | (2.8) | (2.9) | (0.2) | (3.8) | ||||||||
| Other comprehensive (loss) income before reclassifications, net of tax | (1.3) | (0.8) | (3.9) | (0.2) | ||||||||
| Amounts reclassified from accumulated other comprehensive loss to income, net of tax | (0.1) | [1] | 1.1 | [1] | (0.1) | [2] | 1.4 | [2] | ||||
| Total other comprehensive (loss) income | (1.2) | 0.3 | (3.8) | 1.2 | ||||||||
| Ending balance | (4.0) | (2.6) | (4.0) | (2.6) | ||||||||
| Accumulated Other Comprehensive Loss [Member] | ||||||||||||
| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||||||||||
| Beginning balance | (210.0) | (205.0) | (211.8) | (182.2) | ||||||||
| Other comprehensive (loss) income before reclassifications, net of tax | (33.2) | 11.6 | (31.4) | (11.5) | ||||||||
| Total other comprehensive (loss) income | (33.1) | 12.7 | (31.3) | (10.1) | ||||||||
| Ending balance | $ (243.1) | $ (192.3) | $ (243.1) | $ (192.3) | ||||||||
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