Debt Obligations - Summary of Senior Notes (Detail) £ in Millions, $ in Millions	Sep. 03, 2022 GBP (£)	Sep. 03, 2022 USD ($)
Debt Instrument [Line Items]
Commercial Paper		$ 0
Two Point Two Five Percent Notes Due May 2022
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount		750
Debt Instrument, Repurchase Amount		750
Three Point Ten Percent Notes Due July 2022
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount		800
Debt Instrument, Repurchase Amount		$ 800
Notes Due May 2022
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.25%	2.25%
Notes Due July 2022
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.10%	3.10%
Notes Due 2029 \| 3.200% Senior Notes Due 2029
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.20%	3.20%
Debt Instrument, Face Amount \| £	£ 300
Notes Due 2034 \| 3.550% Senior Notes Due 2034
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.55%	3.55%
Debt Instrument, Face Amount \| £	£ 450
Notes Due 2028 \| Three Point Six Percent Notes Due 2028
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.60%	3.60%
Debt Instrument, Face Amount		$ 750
Notes Due 2032 \| Three Point Nine Percent Notes Due 2032
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.90%	3.90%
Debt Instrument, Face Amount		$ 1,250
Notes Due 2052 \| Four Point Two Percent Notes Due 2052
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.20%	4.20%
Debt Instrument, Face Amount		$ 500

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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