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Restructuring - Summary of Restructuring Activities (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Restructuring Reserve [Roll Forward] |  |  |
Accrual as of beginning of period | $ 108.7 | $ 98.0 | $ 74.0
Charges | 194.2 | 88.0 | 70.9
Utilization, Cash | (135.7) | (72.6) | (45.6)
Utilization, Non-cash | (9.5) | (4.7) | (1.3)
Accrual as of end of period | 157.7 | 108.7 | 98.0
Employee termination benefits |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Accrual as of beginning of period | 103.3 | 93.0 | 69.4
Charges | 167.8 | 74.5 | 62.9
Utilization, Cash | (118.3) | (64.2) | (39.3)
Utilization, Non-cash | 0.0 | 0.0 | 0.0
Accrual as of end of period | 152.8 | 103.3 | 93.0
Asset impairments |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Accrual as of beginning of period | 0.0 | 0.0 | 0.0
Charges | 9.5 | 4.7 | 1.3
Utilization, Cash | 0.0 | 0.0 | 0.0
Utilization, Non-cash | (9.5) | (4.7) | (1.3)
Accrual as of end of period | 0.0 | 0.0 | 0.0
Contract termination costs |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Accrual as of beginning of period | 5.4 | 5.0 | 4.6
Charges | 3.0 | 1.5 | 1.7
Utilization, Cash | (3.5) | (1.1) | (1.3)
Utilization, Non-cash | 0.0 | 0.0 | 0.0
Accrual as of end of period | 4.9 | 5.4 | 5.0
Other related costs |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Accrual as of beginning of period | 0.0 | 0.0 | 0.0
Charges | 13.9 | 7.3 | 5.0
Utilization, Cash | (13.9) | (7.3) | (5.0)
Utilization, Non-cash | 0.0 | 0.0 | 0.0
Accrual as of end of period | $ 0.0 | $ 0.0 | $ 0.0

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