Taxes on Income - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income tax expense (benefit) related to the TCJA		$ 149
Income tax expense (benefit) from repatriation of foreign earnings related to the TCJA		173
Income tax expense (benefit) from change in tax rate related to the TCJA		(24)
Undistributed earnings of foreign subsidiaries for income tax purposes	$ 3,200
Undistributed earnings of foreign subsidiaries reinvested indefinitely	776
Net income tax payments	659	558	$ 709
Operating loss carryforwards	689
Total amount of federal, state and local, and foreign unrecognized tax benefits excluding interest and penalties	124	147	$ 212	$ 221
Net increase (decrease) in tax expense from change in unrecognized tax benefits	10
Decrease in unrecognized tax benefits reasonably possible	10
Accrued interest and penalties associated with uncertain tax positions	$ 20	$ 35