Long-Lived Asset Impairments (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Property, Plant and Equipment [Abstract]
Long-Lived Assets Impairment		$ 124		$ 124	$ 143
Goodwill and Equity Investment Impairment		$ 20		20	121
Long-Lived Assets Impairment and Other Related Charges	$ 17		$ 0	$ 208	$ 143