Cash and Cash Equivalents - Annual Yield Rates of Bank Deposits, Commercial Paper, Negotiable Certificates of Deposit and Time Deposits and Repurchase Agreements Collateralized by Bonds (Detail)	Dec. 31, 2022	Dec. 31, 2021
Bank deposits [Member] | Top of Range [Member]
Disclosure of cash and cash equivalents [Line Items]
Yield rate	2.62%	0.45%
Bank deposits [Member] | Bottom of Range [Member]
Disclosure of cash and cash equivalents [Line Items]
Yield rate	0.00%	0.00%
Commercial papers [Member] | Top of Range [Member]
Disclosure of cash and cash equivalents [Line Items]
Yield rate	1.30%	0.30%
Commercial papers [Member] | Bottom of Range [Member]
Disclosure of cash and cash equivalents [Line Items]
Yield rate	0.56%	0.17%
Negotiable certificates of deposit [Member] | Top of Range [Member]
Disclosure of cash and cash equivalents [Line Items]
Yield rate	1.45%	0.30%
Negotiable certificates of deposit [Member] | Bottom of Range [Member]
Disclosure of cash and cash equivalents [Line Items]
Yield rate	1.20%	0.27%
Time deposits [Member] | Top of Range [Member]
Disclosure of cash and cash equivalents [Line Items]
Yield rate	4.65%	3.60%
Time deposits [Member] | Bottom of Range [Member]
Disclosure of cash and cash equivalents [Line Items]
Yield rate	0.01%	0.01%