Accounting Pronouncements (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred Finance Costs, Net	$ 22	[1]	$ 27	[1]	$ 27	$ 30
Adjustments for New Accounting Principle, Early Adoption [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred Finance Costs, Net	$ 18		$ 22

[1] Includes $4 million and $5 million as of December 31, 2015 and 2014, respectively, related to the Company's revolving credit facility and accounts receivables securitization facility, which are included in Other noncurrent assets in the consolidated balance sheets.