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v3.20.4

Restructuring Costs - Restructuring Liability (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2020
Restructuring Reserve [Roll Forward] |  |  |  |  |
Costs Expensed, Net of Reversals | $ 104 | $ 74 | $ 441 | $ 248 |
Restructuring Liability, ending balance | 321 |  | 321 |  |
Fiscal 2021 Plan |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Liability, beginning balance |  |  | 0 |  |
Costs Expensed, Net of Reversals |  |  | 441 |  |
Costs Not Affecting Restructuring Liability |  |  | (18) |  |
Cash Paid |  |  | (221) |  |
Other |  |  | 8 |  |
Restructuring Liability, ending balance | 210 |  | 210 |  | $ 0
Fiscal 2021 Plan | Workforce Reductions |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Liability, beginning balance |  |  | 0 |  |
Costs Expensed, Net of Reversals |  |  | 416 |  |
Costs Not Affecting Restructuring Liability |  |  | (9) |  |
Cash Paid |  |  | (210) |  |
Other |  |  | 9 |  |
Restructuring Liability, ending balance | 206 |  | 206 |  | 0
Fiscal 2021 Plan | Facilities Costs |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Liability, beginning balance |  |  | 0 |  |
Costs Expensed, Net of Reversals |  |  | 25 |  |
Costs Not Affecting Restructuring Liability |  |  | (9) |  |
Cash Paid |  |  | (11) |  |
Other |  |  | (1) |  |
Restructuring Liability, ending balance | 4 |  | 4 |  | 0
Fiscal 2020 Plan |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Liability, beginning balance |  |  | 76 |  |
Costs Expensed, Net of Reversals |  |  | 3 |  |
Costs Not Affecting Restructuring Liability |  |  | 6 |  |
Cash Paid |  |  | (51) |  |
Other |  |  | 5 |  |
Restructuring Liability, ending balance | 39 |  | 39 |  | 76
Costs expensed, net of reversals |  |  | 11 |  |
Fiscal 2020 Plan | Workforce Reductions |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Liability, beginning balance |  |  | 74 |  |
Costs Expensed, Net of Reversals |  |  | 7 |  |
Costs Not Affecting Restructuring Liability |  |  | 2 |  |
Cash Paid |  |  | (49) |  |
Other |  |  | 5 |  |
Restructuring Liability, ending balance | 39 |  | 39 |  | 74
Costs expensed, net of reversals |  |  |  |  | 14
Fiscal 2020 Plan | Facilities Costs |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Liability, beginning balance |  |  | 2 |  |
Costs Expensed, Net of Reversals |  |  | (4) |  |
Costs Not Affecting Restructuring Liability |  |  | 4 |  |
Cash Paid |  |  | (2) |  |
Other |  |  | 0 |  |
Restructuring Liability, ending balance | 0 |  | 0 |  | 2
Fiscal 2019 Plan |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Liability, beginning balance |  |  | 30 |  |
Costs Expensed, Net of Reversals |  |  | (5) |  |
Costs Not Affecting Restructuring Liability |  |  | (1) |  |
Cash Paid |  |  | (13) |  |
Other |  |  | 3 |  |
Restructuring Liability, ending balance | 14 |  | 14 |  | 30
Costs expensed, net of reversals |  |  | 10 |  |
Fiscal 2019 Plan | Workforce Reductions |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Liability, beginning balance |  |  | 25 |  |
Costs Expensed, Net of Reversals |  |  | (2) |  |
Costs Not Affecting Restructuring Liability |  |  | (3) |  |
Cash Paid |  |  | (13) |  |
Other |  |  | 2 |  |
Restructuring Liability, ending balance | 9 |  | 9 |  | 25
Fiscal 2019 Plan | Facilities Costs |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Liability, beginning balance |  |  | 5 |  |
Costs Expensed, Net of Reversals |  |  | (3) |  |
Costs Not Affecting Restructuring Liability |  |  | 2 |  |
Cash Paid |  |  | 0 |  |
Other |  |  | 1 |  |
Restructuring Liability, ending balance | 5 |  | 5 |  | 5
Other Prior Year Plans |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Liability, beginning balance |  |  | 24 |  |
Costs Expensed, Net of Reversals |  |  | 1 |  |
Costs Not Affecting Restructuring Liability |  |  | 2 |  |
Cash Paid |  |  | (14) |  |
Other |  |  | 2 |  |
Restructuring Liability, ending balance | 15 |  | 15 |  | 24
Costs expensed, net of reversals |  |  | 3 |  |
Other Prior Year Plans | Workforce Reductions |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Liability, beginning balance |  |  | 24 |  |
Costs Expensed, Net of Reversals |  |  | 1 |  |
Costs Not Affecting Restructuring Liability |  |  | 2 |  |
Cash Paid |  |  | (14) |  |
Other |  |  | 2 |  |
Restructuring Liability, ending balance | 15 |  | 15 |  | 24
Other Prior Year Plans | Facilities Costs |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Liability, beginning balance |  |  | 0 |  |
Costs Expensed, Net of Reversals |  |  | 0 |  |
Costs Not Affecting Restructuring Liability |  |  | 0 |  |
Cash Paid |  |  | 0 |  |
Other |  |  | 0 |  |
Restructuring Liability, ending balance | 0 |  | 0 |  | 0
Acquired Liabilities |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Liability, beginning balance |  |  | 50 |  |
Costs Expensed, Net of Reversals |  |  | 1 |  |
Costs Not Affecting Restructuring Liability |  |  | 1 |  |
Cash Paid |  |  | (10) |  |
Other |  |  | 1 |  |
Restructuring Liability, ending balance | 43 |  | 43 |  | 50
Acquired Liabilities | Workforce Reductions |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Liability, beginning balance |  |  | 39 |  |
Costs Expensed, Net of Reversals |  |  | 1 |  |
Costs Not Affecting Restructuring Liability |  |  | 0 |  |
Cash Paid |  |  | (7) |  |
Other |  |  | 1 |  |
Restructuring Liability, ending balance | 34 |  | 34 |  | 39
Acquired Liabilities | Facilities Costs |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Liability, beginning balance |  |  | 11 |  |
Costs Expensed, Net of Reversals |  |  | 0 |  |
Costs Not Affecting Restructuring Liability |  |  | 1 |  |
Cash Paid |  |  | (3) |  |
Other |  |  | 0 |  |
Restructuring Liability, ending balance | $ 9 |  | $ 9 |  | $ 11

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