XML 248 R169.htm IDEA: XBRL DOCUMENT v3.22.1
Stockholders' Equity - Summary of Common Stock (Detail) - shares
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Series A [Member]    
Disclosure of Classes of Share Capital [Line Items]    
Subscribed and paid shares 29,457,941,452 29,457,941,452
Unissued shares authorized for executives' stock compensation programs 881,442,830 881,442,830
Repurchased shares 0 756,323,120
Shares that guarantee/guaranteed the issuance of convertible securities 0 1,970,862,596
Shares authorized for the issuance of stock or convertible securities 0 302,144,720
Number of shares issued 30,339,384,282 33,368,714,718
Series B [Member]    
Disclosure of Classes of Share Capital [Line Items]    
Subscribed and paid shares 14,728,970,726 14,728,970,726
Unissued shares authorized for executives' stock compensation programs 440,721,415 440,721,415
Repurchased shares 0 378,161,560
Shares that guarantee/guaranteed the issuance of convertible securities 0 985,431,298
Shares authorized for the issuance of stock or convertible securities 0 151,072,360
Number of shares issued 15,169,692,141 16,684,357,359