v3.20.4
Tax Matters - Reconciliation of Gross Unrecognized Tax Benefits (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Balance, beginning $ (5,381) [1] $ (6,259) [1] $ (6,558)
Acquisitions [2] 37 (44) 0
Divestitures [3] 265 0 0
Increases based on tax positions taken during a prior period [4] (232) (36) (192)
Decreases based on tax positions taken during a prior period [4],[5] 64 1,109 561
Decreases based on settlements for a prior period [6] 15 100 123
Increases based on tax positions taken during the current period [4] (411) (383) (370)
Impact of foreign exchange (72) 25 56
Other, net [4],[7] 120 107 121
Balance, ending [1] $ (5,595) $ (5,381) $ (6,259)
[1] In 2020, included in Income taxes payable ($34 million), Noncurrent deferred tax assets and other noncurrent tax assets ($18 million), Noncurrent deferred tax liabilities ($3.0 billion) and Other taxes payable ($2.5 billion). In 2019, included in Income taxes payable ($108 million), Current tax assets ($2 million), Noncurrent deferred tax assets and other noncurrent tax assets ($51 million), Noncurrent deferred tax liabilities ($2.8 billion) and Other taxes payable ($2.4 billion).
[2] For 2020 and 2019, primarily related to the acquisition of Array (goodwill adjustment made within the measurement period). See Note 2A.
[3] For 2020, related to the separation of Upjohn. See Note 2B.
[4] Primarily included in Provision/(benefit) for taxes on income.
[5] Primarily related to effectively settling certain issues with the U.S. and foreign tax authorities. See Note 5A.
[6] Primarily related to cash payments and reductions of tax attributes.
[7] Primarily related to decreases as a result of a lapse of applicable statutes of limitations.