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Derivative Financial Instruments - Outstanding Foreign Currency Forward Contracts (Detail)
₽ in Millions, € in Millions, ₩ in Millions, ¥ in Millions, £ in Millions, kr in Millions, kr in Millions, R$ in Millions, R in Millions, $ in Millions, $ in Millions, $ in Millions, $ in Millions
Sep. 30, 2021
USD ($)
Sep. 30, 2021
KRW (₩)
Sep. 30, 2021
NOK (kr)
Sep. 30, 2021
RUB (₽)
Sep. 30, 2021
MXN ($)
Sep. 30, 2021
JPY (¥)
Sep. 30, 2021
ZAR (R)
Sep. 30, 2021
EUR (€)
Sep. 30, 2021
SGD ($)
Sep. 30, 2021
GBP (£)
Sep. 30, 2021
DKK (kr)
Dec. 31, 2020
USD ($)
Dec. 31, 2020
KRW (₩)
Dec. 31, 2020
NOK (kr)
Dec. 31, 2020
RUB (₽)
Dec. 31, 2020
MXN ($)
Dec. 31, 2020
JPY (¥)
Dec. 31, 2020
ZAR (R)
Dec. 31, 2020
EUR (€)
Dec. 31, 2020
SGD ($)
Dec. 31, 2020
GBP (£)
Dec. 31, 2020
DKK (kr)
Dec. 31, 2020
CAD ($)
Dec. 31, 2020
BRL (R$)
Forward Contracts [Member]                                                
Derivative [Line Items]                                                
Foreign currency, Cash flow hedging $ 374 ₩ 17,600 kr 2,006 ₽ 1,115 $ 506 ¥ 465 R 124 € 108 $ 34 £ 24 kr 22 $ 367 ₩ 17,600 kr 3,817 ₽ 1,118 $ 402 ¥ 340 R 124 € 116 $ 31 £ 18 kr 875 $ 1 R$ 768