Fourth Quarter Financial Results (unaudited) (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2020 | |||||||||||||||||||||||||||||||||||||||||||||||||
| Quarterly Financial Information Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of fourth quarter financial results |
(a)Fourth quarter results in 2020 included after-tax charges of $4.7 billion related to the change in fair value of contingent consideration liabilities partially offset by an after-tax benefit of $1.5 billion due to impacts related to tax law changes.
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