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Restructuring, Impairment and Related Charges - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2020
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring, impairment and related charges recognized | $ 155 | $ 136 | $ 271 | $ 204 |
Net restructuring, impairment and related charges recognized | 40 | 42 | 156 | 110 |
Restructuring liabilities | 132 |  | 132 |  | $ 157
Impairment of long-lived and intangible assets |  |  | 236 | 113 |
International |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Net restructuring, impairment and related charges recognized | 131 |  | 189 |  |
Impairment of long-lived and intangible assets | 115 | 94 | 115 | 94 |
Strategic Growth Initiative Plan - Relocation of Corporate Headquarters |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Pre-tax charges recorded to-date | 104 |  | 104 |  |
Strategic Growth Initiative Plan - Relocation of Corporate Headquarters | Employee Retention Expenses, Severance, Accelerated Depreciation and Asset Impairments |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Net restructuring, impairment and related charges recognized | 14 | 14 | 27 | 34 |
Strategic Growth Initiative Plan - Relocation of Corporate Headquarters | Minimum |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected total pre-tax charges | 105 |  | 105 |  |
Strategic Growth Initiative Plan - Relocation of Corporate Headquarters | Maximum |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected total pre-tax charges | 125 |  | 125 |  |
Operating Model and Cost Optimization Programs |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Pre-tax charges recorded to-date | 288 |  | 288 |  |
Operating Model and Cost Optimization Programs | Minimum |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected total pre-tax charges | 310 |  | 310 |  |
Operating Model and Cost Optimization Programs | Maximum |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected total pre-tax charges | 320 |  | 320 |  |
Strategic Growth Initiative Plan - Other | Employee Severance, Accelerated Depreciation, and Project Consulting |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Net restructuring, impairment and related charges recognized | 17 | $ 20 | 53 | $ 59 |
Strategic Growth Initiative Plan | International |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Net restructuring, impairment and related charges recognized | 9 |  | 50 |  |
Strategic Growth Initiative Plan | Minimum |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected total pre-tax charges | 100 |  | 100 |  |
Strategic Growth Initiative Plan | Maximum |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected total pre-tax charges | $ 120 |  | $ 120 |  |

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