Taxes on Income (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Taxes on income (Textual) [Abstract]
Undistributed earnings of foreign subsidiaries for income tax purposes		$ 1,239
Net income tax payments	419	787	243
Operating Loss Carryforwards	125
Total amount of federal, state and local, and foreign unrecognized tax benefits excluding interest and penalties	118	82	74	58
Increase in amount of unrecognized tax benefits that unfavorably impact tax expense	52
Accrued interest and penalties associated with uncertain tax positions	$ 23	$ 19