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Share Based Compensation - Summary of Number of Shares and Synthetic Shares (Detail) | 12 Months Ended
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Dec. 31, 2021 shares
Members of Executive Board [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Maximum shares required | 10,600,000
Granted shares | 2,900,000
Outstanding beginning | 3,800,000
Exercised during 2021 | (1,600,000)
Increase due to performance condition 2021 | 200,000
Outstanding ending | 3,000,000.0
Members of Executive Board [member] | LTV 2021 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Maximum shares required | 2,100,000
Granted shares | 600,000
Increase due to performance condition 2021 | 300,000
Outstanding ending | 900,000
Members of Executive Board [member] | LTV 2020 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Maximum shares required | 2,500,000
Granted shares | 900,000
Outstanding beginning | 1,300,000
Outstanding ending | 1,300,000
Members of Executive Board [member] | LTV 2019 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Maximum shares required | 3,000,000.0
Granted shares | 600,000
Outstanding beginning | 900,000
Increase due to performance condition 2021 | (100,000)
Outstanding ending | 800,000
Members of Executive Board [member] | LTV 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Maximum shares required | 3,000,000.0
Granted shares | 800,000
Outstanding beginning | 1,600,000
Exercised during 2021 | (1,600,000)
The President and CEO [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Granted shares | 1,400,000
Outstanding beginning | 1,800,000
Exercised during 2021 | (800,000)
Increase due to performance condition 2021 | 100,000
Outstanding ending | 1,400,000
The President and CEO [member] | LTV 2021 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Granted shares | 300,000
Increase due to performance condition 2021 | 200,000
Outstanding ending | 500,000
The President and CEO [member] | LTV 2020 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Granted shares | 400,000
Outstanding beginning | 600,000
Outstanding ending | 600,000
The President and CEO [member] | LTV 2019 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Granted shares | 300,000
Outstanding beginning | 400,000
Increase due to performance condition 2021 | (100,000)
Outstanding ending | 300,000
The President and CEO [member] | LTV 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Granted shares | 400,000
Outstanding beginning | 800,000
Exercised during 2021 | (800,000)
Key contributor plan [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Maximum shares required | 19,500,000
Key contributor plan [member] | Key Contributor Plan 2020 (KC Plan 2020) [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Maximum shares required | 8,000,000.0
Key contributor plan [member] | Key Contributor Plan2019 |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Maximum shares required | 3,900,000
Key contributor plan [member] | Key Contributor Plan2021 |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Maximum shares required | 7,600,000
Synthetic shares [member] | Executive performance plan [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Maximum shares required | 3,500,000
Synthetic shares [member] | Executive performance plan [member] | EPP 2020 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Maximum shares required | 1,500,000
Synthetic shares [member] | Executive performance plan [member] | EPP 2019 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Maximum shares required | 800,000
Synthetic shares [member] | Executive performance plan [member] | EPP 2021 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Maximum shares required | 1,200,000

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