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Restructuring - Summary of Restructuring Activities (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Restructuring Reserve [Roll Forward] |  |  |
Accrual as of beginning of period | $ 98.0 | $ 74.0 | $ 71.8
Charges | 88.0 | 70.9 | 63.6
Utilization, Cash | (72.6) | (45.6) | (56.7)
Utilization, Non-cash | (4.7) | (1.3) | (4.7)
Accrual as of end of period | 108.7 | 98.0 | 74.0
Employee termination benefits |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Accrual as of beginning of period | 93.0 | 69.4 | 66.5
Charges | 74.5 | 62.9 | 54.1
Utilization, Cash | (64.2) | (39.3) | (51.2)
Utilization, Non-cash | 0.0 | 0.0 | 0.0
Accrual as of end of period | 103.3 | 93.0 | 69.4
Asset impairments |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Accrual as of beginning of period | 0.0 | 0.0 | 0.0
Charges | 4.7 | 1.3 | 4.7
Utilization, Cash | 0.0 | 0.0 | 0.0
Utilization, Non-cash | (4.7) | (1.3) | (4.7)
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 | 5.0 | 4.6 | 5.3
Charges | 1.5 | 1.7 | 0.1
Utilization, Cash | (1.1) | (1.3) | (0.8)
Utilization, Non-cash | 0.0 | 0.0 | 0.0
Accrual as of end of period | 5.4 | 5.0 | 4.6
Other related costs |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Accrual as of beginning of period | 0.0 | 0.0 | 0.0
Charges | 7.3 | 5.0 | 4.7
Utilization, Cash | (7.3) | (5.0) | (4.7)
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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