Financial Instruments (Fair Values Of Derivatives Instruments) (Detail) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair Value, Derivative Assets	$ 74	$ 20
Fair Value, Derivative Liabilities	97	52
Derivatives designated as hedging instruments | Interest rate swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair Value, Derivative Assets	32	2
Fair Value, Derivative Liabilities	0	27
Derivatives not designated as hedging instruments | Foreign exchange contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair Value, Derivative Assets	14	7
Fair Value, Derivative Liabilities	3	10
Derivatives not designated as hedging instruments | Interest rate caps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair Value, Derivative Assets	28	11
Fair Value, Derivative Liabilities	$ 94	$ 15