Additional Financial Statement Information (Details 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Additional Financial Statement Information [Abstract]
Other Other Operating Income (Expense)	$ (70)	$ (96)	$ (49)
Cash Paid During the Year For
Interest, Net of Amount Capitalized	327	260	189
Income Taxes Paid, Net	236	202	150
Non-Cash Financing and Investing Activities
Increase in Capital Lease and Other Obligations	$ 5	$ 55	$ 110