Taxes on Income (Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	$ 101	$ 112
Additions for tax positions related to the current year	15	3
Additions for tax positions related to prior years	3	4
Additions for current year acquisitions	200	0
Reductions for tax positions related to prior years	(7)	(2)
Reductions due to lapse of statute of limitations	(24)	(14)
Reductions for settlements with tax authorities	(40)	(2)
Balance at end of year	$ 248	$ 101

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of increase in unrecognized tax benefits resulting from acquisitions.

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