Income Taxes - Summary of Net Operating Loss, Valuation Allowance and Expiration Dates (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Income Tax Contingency [Line Items]
Valuation allowance	$ (1,470)
Non-U.S. [Member]
Income Tax Contingency [Line Items]
Net operating loss DTAs	233
Valuation allowance	$ (233)
Non-U.S. [Member] | Minimum [Member]
Income Tax Contingency [Line Items]
Expiration	2020
Non-U.S. [Member] | Maximum [Member]
Income Tax Contingency [Line Items]
Expiration	Unlimited
U.S. [Member]
Income Tax Contingency [Line Items]
Net operating loss DTAs	$ 386
Valuation allowance	$ (386)
U.S. [Member] | Minimum [Member]
Income Tax Contingency [Line Items]
Expiration	2031
U.S. [Member] | Maximum [Member]
Income Tax Contingency [Line Items]
Expiration	Unlimited
State [Member]
Income Tax Contingency [Line Items]
Net operating loss DTAs	$ 192
Valuation allowance	$ (192)
State [Member] | Minimum [Member]
Income Tax Contingency [Line Items]
Expiration	2020
State [Member] | Maximum [Member]
Income Tax Contingency [Line Items]
Expiration	2039