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Financial Instruments - Schedule of Class Between Book Value And Fair Value Of The Financial Instruments (Detail) - BRL (R$)
R$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Disclosure of detailed information about financial instruments [line items]    
Book value R$ 17,418,352 R$ 12,076,375
Short term investment [member]    
Disclosure of detailed information about financial instruments [line items]    
Book value 2,937,029 2,770,589
Financial liabilities [member]    
Disclosure of detailed information about financial instruments [line items]    
Book value 13,431,108 7,970,461
Fair value 13,316,522 7,829,334
Financial liabilities [member] | Level 2 of fair value hierarchy [member] | Derivative financial instruments [member]    
Disclosure of detailed information about financial instruments [line items]    
Book value 1,354 586
Fair value 1,354 586
Financial liabilities [member] | Level 2 of fair value hierarchy [member] | Accounts payable [ member]    
Disclosure of detailed information about financial instruments [line items]    
Book value 6,500,071 4,996,102
Fair value 6,380,302 4,898,949
Financial liabilities [member] | Level 2 of fair value hierarchy [member] | Trade Accounts Payable [member]    
Disclosure of detailed information about financial instruments [line items]    
Book value 97,825 117,836
Fair value 97,825 117,836
Financial liabilities [member] | Level 2 of fair value hierarchy [member] | Loans and Financing [member]    
Disclosure of detailed information about financial instruments [line items]    
Book value 3,035,294 762,451
Fair value 3,041,500 747,651
Financial liabilities [member] | Level 2 of fair value hierarchy [member] | FIDC Senior Quota Holders [member]    
Disclosure of detailed information about financial instruments [line items]    
Book value 3,710,894 2,074,571
Fair value 3,709,871 2,045,397
Financial liabilities [member] | Level 2 of fair value hierarchy [member] | Other Liabilities [member]    
Disclosure of detailed information about financial instruments [line items]    
Book value 85,670 18,915
Fair value 85,670 18,915
Financial assets [member]    
Disclosure of detailed information about financial instruments [line items]    
Book value 17,418,352 12,076,375
Fair value 17,418,352 12,076,375
Financial assets [member] | Level 1 and 2 of Fair Value Hierarchy [member] | Short term investment [member]    
Disclosure of detailed information about financial instruments [line items]    
Book value 2,937,029 2,770,589
Fair value 2,937,029 2,770,589
Financial assets [member] | Level 2 of fair value hierarchy [member] | Accounts receivable from card issuers [member]    
Disclosure of detailed information about financial instruments [line items]    
Book value 14,066,814 9,244,608
Fair value 14,066,814 9,244,608
Financial assets [member] | Level 2 of fair value hierarchy [member] | Trade receivables [member]    
Disclosure of detailed information about financial instruments [line items]    
Book value 249,417 44,616
Fair value 249,417 44,616
Financial assets [member] | Level 2 of fair value hierarchy [member] | Derivative financial instruments [member]    
Disclosure of detailed information about financial instruments [line items]    
Book value 14,062 1,195
Fair value 14,062 1,195
Financial assets [member] | Level 2 of fair value hierarchy [member] | Other accounts receivable [member]    
Disclosure of detailed information about financial instruments [line items]    
Book value 151,030 15,367
Fair value R$ 151,030 R$ 15,367