Changes in and Reclassification out of Accumulated Other Comprehensive Income/(Loss) by Component - Summary of Reclassification of Accumulated Other Comprehensive Loss by Component (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from accumulated other comprehensive income	$ (4)	$ (8)	$ (9)	$ (389)
Connect
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from accumulated other comprehensive income				374
Currency Translation Adjustments | Connect
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from accumulated other comprehensive income				233
Unrealized (Gains)/Losses on Pension Liability on Dispositions | Connect
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Reclassification from accumulated other comprehensive income				$ 141