Organizational Efficiency Plans (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended	12 Months Ended	3 Months Ended						12 Months Ended	3 Months Ended				12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2012 Organizational Efficiency Cost Reduction 2012 Plan [Member]	Dec. 31, 2013 Organizational Efficiency Cost Reduction 2013 Plan [Member]	Sep. 30, 2014 Employee Severance [Member]	Jun. 30, 2014 Employee Severance [Member]	Mar. 31, 2014 Employee Severance [Member]	Dec. 31, 2013 Employee Severance [Member]	Dec. 31, 2013 Employee Severance [Member]	Sep. 30, 2014 Facility Closing [Member]	Jun. 30, 2014 Facility Closing [Member]	Mar. 31, 2014 Facility Closing [Member]	Dec. 31, 2013 Facility Closing [Member]	Dec. 31, 2013 Facility Closing [Member]
Organizational Efficiency Plan Activity [Line Items]
Balance, January 1,			$ 81		$ 81	$ 71					$ 68		$ 67			$ 13		$ 4
Charge				60			77	60				47					13
Payments	15	8	12			50			14	7	11		46	1	1	1		4
Ending balance	46			81	46	81			36			68	68	10			13	13
Restructuring charge, net of tax							$ 50	$ 40
Caption that includes restructuring charges					Other operating expenses