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Restructuring Costs (Schedule Of The Activity And Balances Associated With Restructuring Liabilities) (Details) (USD $) In Millions, unless otherwise specified													9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2014 Other Current Liabilities [Member]	Dec. 31, 2013 Other Current Liabilities [Member]	Sep. 30, 2013 Other Current Liabilities [Member]	Dec. 31, 2012 Other Current Liabilities [Member]	Sep. 30, 2014 Other Long-Term Liabilities [Member]	Dec. 31, 2013 Other Long-Term Liabilities [Member]	Sep. 30, 2013 Other Long-Term Liabilities [Member]	Dec. 31, 2012 Other Long-Term Liabilities [Member]	Sep. 30, 2014 Canada Divestiture [Member]	Sep. 30, 2014 Canada Divestiture [Member] Other Current Liabilities [Member]	Sep. 30, 2014 Canada Divestiture [Member] Other Long-Term Liabilities [Member]	Sep. 30, 2014 Office Consolidation [Member]	Sep. 30, 2013 Office Consolidation [Member]	Sep. 30, 2014 Office Consolidation [Member] Other Current Liabilities [Member]	Sep. 30, 2013 Office Consolidation [Member] Other Current Liabilities [Member]	Sep. 30, 2014 Office Consolidation [Member] Other Long-Term Liabilities [Member]	Sep. 30, 2013 Office Consolidation [Member] Other Long-Term Liabilities [Member]	Sep. 30, 2014 Offshore Divestiture [Member]	Sep. 30, 2013 Offshore Divestiture [Member]	Sep. 30, 2014 Offshore Divestiture [Member] Other Current Liabilities [Member]	Sep. 30, 2013 Offshore Divestiture [Member] Other Current Liabilities [Member]	Sep. 30, 2014 Offshore Divestiture [Member] Other Long-Term Liabilities [Member]	Sep. 30, 2013 Offshore Divestiture [Member] Other Long-Term Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 23	$ 45	$ 53	$ 61	$ 5	$ 27	$ 34	$ 52	$ 18	$ 18	$ 19	$ 9
Restructuring reserve activity													4	2	2	(23)	(5)	(22)	(16)	(1)	11	(3)	(3)	(2)	(2)	(1)	(1)
Ending balance	$ 23	$ 45	$ 53	$ 61	$ 5	$ 27	$ 34	$ 52	$ 18	$ 18	$ 19	$ 9