Accumulated Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (82)	$ 5	$ 36	$ 26
Other comprehensive income before reclassifications	(122)	(24)
Amounts reclassified from accumulated other comprehensive income	4	3
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(53)	41	67	56
Other comprehensive income before reclassifications	(120)	(15)
Amounts reclassified from accumulated other comprehensive income	0	0
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(29)	(36)	(31)	(30)
Other comprehensive income before reclassifications	(2)	(9)
Amounts reclassified from accumulated other comprehensive income	$ 4	$ 3