Segments - Schedule of Net Revenue Disaggregated by Geography for International Segment (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues From External Customers And Long Lived Assets [Line Items]
Net Revenues	$ 4,351.0	$ 4,050.7	$ 4,090.1	$ 3,597.1	$ 4,079.7	$ 3,911.4	$ 4,124.2	$ 3,672.1	$ 16,088.9	$ 15,787.4	$ 15,940.7
Operating Segments [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net Revenues									16,056.9	15,747.9	15,919.3
Operating Segments [Member] \| International [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net Revenues									3,402.0	3,504.7	3,319.5
Operating Segments [Member] \| International [Member] \| Europe [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net Revenues									1,471.7	1,482.6	1,439.2
Operating Segments [Member] \| International [Member] \| Asia Pacific, Middle East and Africa [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net Revenues									1,075.1	1,089.9	929.9
Operating Segments [Member] \| International [Member] \| Latin America and Canada [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net Revenues									772.9	862.4	863.3
Operating Segments [Member] \| International [Member] \| Other [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net Revenues									$ 82.3	$ 69.8	$ 87.1

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