Contingencies (Other Matters Narrative) (Details) - Entity [Domain] $ in Millions	3 Months Ended	6 Months Ended		80 Months Ended
	Jun. 30, 2014 USD ($)	Jun. 30, 2015	Jun. 30, 2014 USD ($)	Jul. 24, 2015
Loss Contingencies [Line Items]
Litigation settlement, amount	$ 26		$ 90
Lights Multi District Litigation [Member]
Loss Contingencies [Line Items]
Additional class action certifications denied, reversed, dismissed or resolved		4
Lights [Member]
Loss Contingencies [Line Items]
Cases Voluntarily Dismissed		13
Subsequent Event [Member]
Loss Contingencies [Line Items]
Lights Ultra Lights Class Certification Cases Pending in United States				12
Subsequent Event [Member] | Lights [Member]
Loss Contingencies [Line Items]
Purported number of class action lawsuits served				26
Additional Class Action Certifications Denied Reversed Dismissed Or Resolved				19