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Restructuring Actions - Roll Forward (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020 | Jun. 30, 2020 | Dec. 31, 2019 | Jun. 30, 2019 | Jun. 30, 2021 | Dec. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
COVID-19 Pandemic |  |  |  |  |  |  |  |  |  |
Restructuring Reserve Roll Forward |  |  |  |  |  |  |  |  |  |
Accrued restructuring action balances, beginning balance | $ 24 |  |  |  |  | $ 24 |  | $ 24 |  |
Expense incurred |  |  | $ 58 |  |  |  |  |  | $ 58 |
Non-cash changes |  |  |  |  |  |  | $ (23) |  |  |
Cash payments | (4) |  |  |  |  |  | (2) |  |  |
Adjustments | (9) |  |  |  |  |  | (9) |  |  |
Accrued restructuring actions balances, ending balance | 11 | $ 24 |  |  |  |  | 24 |  | 24 |
Operational/Marketing Capability Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve Roll Forward |  |  |  |  |  |  |  |  |  |
Accrued restructuring action balances, beginning balance | 101 |  |  |  |  | 101 |  | 101 |  |
Expense incurred |  |  |  |  |  |  |  | 124 | 137 |
Non-cash changes |  |  |  |  |  |  |  |  | (36) |
Cash payments |  |  |  |  |  |  |  | (127) |  |
Adjustments |  |  |  |  |  |  |  | (11) |  |
Accrued restructuring actions balances, ending balance |  | 101 |  |  |  |  | 101 | 87 | 101 |
Divestiture-Related Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve Roll Forward |  |  |  |  |  |  |  |  |  |
Accrued restructuring action balances, beginning balance | 24 |  |  |  |  | 24 |  | 24 |  |
Expense incurred |  |  | 55 |  |  |  |  |  | 55 |
Non-cash changes |  |  |  |  |  |  | (14) |  |  |
Cash payments |  |  |  |  |  | (5) | (14) |  |  |
Adjustments |  |  |  |  |  | (1) | (3) |  |  |
Accrued restructuring actions balances, ending balance |  | 24 |  |  |  | 18 | 24 |  | 24 |
2019 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve Roll Forward |  |  |  |  |  |  |  |  |  |
Accrued restructuring action balances, beginning balance | 30 |  |  |  |  | 30 |  | 30 | 140 |
Expense incurred |  |  |  | $ 134 | $ 148 |  |  |  |  | $ 282
Non-cash changes |  |  |  |  |  |  |  |  |  | (76)
Cash payments |  |  |  |  |  |  |  |  | (51) | (52)
Adjustments |  |  |  |  |  |  |  |  | (59) | (14)
Accrued restructuring actions balances, ending balance |  | 30 |  | 140 |  |  | 30 |  | 30 | 140
Employee-Related | COVID-19 Pandemic |  |  |  |  |  |  |  |  |  |
Restructuring Reserve Roll Forward |  |  |  |  |  |  |  |  |  |
Accrued restructuring action balances, beginning balance | 24 |  |  |  |  | 24 |  | 24 |  |
Expense incurred |  |  | 35 |  |  |  |  |  |  |
Non-cash changes |  |  |  |  |  |  | 0 |  |  |
Cash payments | (4) |  |  |  |  |  | (2) |  |  |
Adjustments | (9) |  |  |  |  |  | (9) |  |  |
Accrued restructuring actions balances, ending balance | 11 | 24 |  |  |  |  | 24 |  | 24 |
Employee-Related | Operational/Marketing Capability Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve Roll Forward |  |  |  |  |  |  |  |  |  |
Accrued restructuring action balances, beginning balance | 101 |  |  |  |  | 101 |  | 101 |  |
Expense incurred |  | 137 |  |  |  |  |  | 124 | 101 |
Non-cash changes |  |  |  |  |  |  |  |  | 0 |
Cash payments |  |  |  |  |  |  |  | (127) |  |
Adjustments |  |  |  |  |  |  |  | (11) |  |
Accrued restructuring actions balances, ending balance |  | 101 |  |  |  |  | 101 | 87 | 101 |
Employee-Related | Divestiture-Related Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve Roll Forward |  |  |  |  |  |  |  |  |  |
Accrued restructuring action balances, beginning balance | 15 |  |  |  |  | 15 |  | 15 |  |
Expense incurred |  |  | 32 |  |  |  |  |  |  |
Non-cash changes |  |  |  |  |  |  | 0 |  |  |
Cash payments |  |  |  |  |  | (5) | (14) |  |  |
Adjustments |  |  |  |  |  | (1) | (3) |  |  |
Accrued restructuring actions balances, ending balance |  | 15 |  |  |  | 9 | 15 |  | 15 |
Employee-Related | 2019 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve Roll Forward |  |  |  |  |  |  |  |  |  |
Accrued restructuring action balances, beginning balance | 30 |  |  |  |  | 30 |  | 30 | 140 |
Expense incurred |  |  |  |  |  |  |  |  |  | 242
Non-cash changes |  |  |  |  |  |  |  |  |  | (36)
Cash payments |  |  |  |  |  |  |  |  | (51) | (52)
Adjustments |  |  |  |  |  |  |  |  | (59) | (14)
Accrued restructuring actions balances, ending balance |  | 30 |  | 140 |  |  | 30 |  | 30 | 140
Asset-Related and Other | Operational/Marketing Capability Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve Roll Forward |  |  |  |  |  |  |  |  |  |
Accrued restructuring action balances, beginning balance | 0 |  |  |  |  | 0 |  | 0 |  |
Expense incurred |  |  |  |  |  |  |  | 0 | 36 |
Non-cash changes |  |  |  |  |  |  |  |  | (36) |
Cash payments |  |  |  |  |  |  |  | 0 |  |
Adjustments |  |  |  |  |  |  |  | 0 |  |
Accrued restructuring actions balances, ending balance |  | 0 |  |  |  |  | 0 | 0 | 0 |
Asset-Related and Other | Divestiture-Related Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve Roll Forward |  |  |  |  |  |  |  |  |  |
Accrued restructuring action balances, beginning balance | 9 |  |  |  |  | 9 |  | 9 |  |
Expense incurred |  |  | 23 |  |  |  |  |  |  |
Non-cash changes |  |  |  |  |  |  | (14) |  |  |
Cash payments |  |  |  |  |  | 0 | 0 |  |  |
Adjustments |  |  |  |  |  | 0 | 0 |  |  |
Accrued restructuring actions balances, ending balance |  | 9 |  |  |  | 9 | 9 |  | 9 |
Asset-Related | COVID-19 Pandemic |  |  |  |  |  |  |  |  |  |
Restructuring Reserve Roll Forward |  |  |  |  |  |  |  |  |  |
Accrued restructuring action balances, beginning balance | 0 |  |  |  |  | 0 |  | 0 |  |
Expense incurred |  |  | $ 23 |  |  |  |  |  |  |
Non-cash changes |  |  |  |  |  |  | (23) |  |  |
Cash payments | 0 |  |  |  |  |  | 0 |  |  |
Adjustments | 0 |  |  |  |  |  | 0 |  |  |
Accrued restructuring actions balances, ending balance | 0 | 0 |  |  |  |  | 0 |  | 0 |
Asset-Related | 2019 Restructuring |  |  |  |  |  |  |  |  |  |
Restructuring Reserve Roll Forward |  |  |  |  |  |  |  |  |  |
Accrued restructuring action balances, beginning balance | $ 0 |  |  |  |  | $ 0 |  | $ 0 | 0 |
Expense incurred |  |  |  |  |  |  |  |  |  | 40
Non-cash changes |  |  |  |  |  |  |  |  |  | (40)
Cash payments |  |  |  |  |  |  |  |  | 0 | 0
Adjustments |  |  |  |  |  |  |  |  | 0 | 0
Accrued restructuring actions balances, ending balance |  | $ 0 |  | $ 0 |  |  | $ 0 |  | $ 0 | $ 0

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