Acquisitions & Divestitures - Divestitures (Details) - item	3 Months Ended	9 Months Ended
Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2021
Cloud & Cognitive Software
Divestitures
Number of divestitures	1	1	2

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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