Segment and Related Information - Schedule of Geographic Information for Long-Lived Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 6,389	$ 6,785
Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	1,947	2,046
Brazil [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	1,354	1,550
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	903	896
Iceland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	901	950
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	749	780
Norway [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	288	310
Spain [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	244	250
Other Geographical Regions [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 3	$ 3