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Restructuring - Additional Information (Detail) - Strategic and Operational Efficiency Restructuring Program - USD ($) $ in Millions		6 Months Ended	36 Months Ended
	Dec. 19, 2024	Jun. 30, 2025	Dec. 31, 2027	Dec. 31, 2024
Restructuring Cost and Reserve [Line Items]
Payments for restructuring		$ 44
Remaining restructuring liability		48		$ 39
Minimum \| Forecast
Restructuring Cost and Reserve [Line Items]
Payments for restructuring			$ 170
Minimum \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		170
Minimum \| Real Estate
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		10
Minimum \| Accelerated Amortization Charges Of Capitalized Software Assets
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		20
Minimum \| Estimated Annual Savings
Restructuring Cost and Reserve [Line Items]
Effect on future earnings, amount	$ 250
Maximum \| Forecast
Restructuring Cost and Reserve [Line Items]
Payments for restructuring			$ 200
Maximum \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		200
Maximum \| Real Estate
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		20
Maximum \| Accelerated Amortization Charges Of Capitalized Software Assets
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		$ 30
Maximum \| Estimated Annual Savings
Restructuring Cost and Reserve [Line Items]
Effect on future earnings, amount	$ 300