Derivative Instruments and Hedging Strategies - Summary of Derivatives Not Designated as Hedging Instruments Outstanding (Detail) - Not Designated as Hedging Instrument ₽ in Millions, € in Millions, £ in Millions, R$ in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2019 RUB (₽) Derivative	Sep. 30, 2019 EUR (€) Derivative	Sep. 30, 2019 COP ($) Derivative	Sep. 30, 2019 BRL (R$) Derivative	Sep. 30, 2019 GBP (£) Derivative
Derivative [Line Items]
Number of Contracts	8	8	8	8	8
Colombian Pesos | Foreign exchange contracts | Sell
Derivative [Line Items]
Number of Contracts	2	2	2	2	2
Aggregate Notional Amount in Foreign Currency | R$				R$ 96,000.0
Colombian Pesos | Minimum | Foreign exchange contracts | Sell
Derivative [Line Items]
Maturity	Oct. 31, 2019
Colombian Pesos | Maximum | Foreign exchange contracts | Sell
Derivative [Line Items]
Maturity	Nov. 30, 2019
Euros | Foreign exchange contracts | Purchase
Derivative [Line Items]
Number of Contracts	2	2	2	2	2
Aggregate Notional Amount in Foreign Currency | $			$ 44.1
Euros | Foreign exchange contracts | Sell
Derivative [Line Items]
Maturity	Jul. 31, 2019
Euros | Minimum | Foreign exchange contracts | Purchase
Derivative [Line Items]
Maturity	Oct. 31, 2019
Euros | Maximum | Foreign exchange contracts | Purchase
Derivative [Line Items]
Maturity	Nov. 30, 2019
Great British Pounds | Foreign exchange contracts | Purchase
Derivative [Line Items]
Number of Contracts	1	1	1	1	1
Aggregate Notional Amount in Foreign Currency | €		€ 4.9
Maturity	Oct. 31, 2019
Great British Pounds | Foreign exchange contracts | Sell
Derivative [Line Items]
Number of Contracts	1	1	1	1	1
Aggregate Notional Amount in Foreign Currency | £					£ 2.0
Maturity	Oct. 31, 2019
Rubles | Foreign exchange contracts | Sell
Derivative [Line Items]
Number of Contracts	2	2	2	2	2
Aggregate Notional Amount in Foreign Currency | ₽	₽ 1,420.0
Rubles | Minimum | Foreign exchange contracts | Sell
Derivative [Line Items]
Maturity	Oct. 31, 2019
Rubles | Maximum | Foreign exchange contracts | Sell
Derivative [Line Items]
Maturity	Nov. 30, 2019