Restructuring - Additional Information (Detail) $ in Millions	Mar. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Total restructuring reserve balance	$ 29
Minimum
Restructuring Cost and Reserve [Line Items]
Aggregate cost for restructuring initiatives	10
Maximum
Restructuring Cost and Reserve [Line Items]
Aggregate cost for restructuring initiatives	30
Western Europe Restructuring Activities
Restructuring Cost and Reserve [Line Items]
Aggregate cost for restructuring initiatives	107
Remaining restructuring liability	$ 25