Business Restructuring (Additional Information) (Details) (USD $)	3 Months Ended				6 Months Ended		12 Months Ended	18 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2013	Dec. 31, 2014 employees	Jul. 18, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost									$ 102,000,000
Expected Cash Charges Related to Restructuring								97,000,000
Expected 2013 Cash Spending Percentage							55.00%
Expected Restructuring Charges to be Expensed as Incurred							5,000,000
Expected Non-Cash Charges from Restructuring								5,000,000
Restructuring and Related Cost, Expected Number of Positions Eliminated								1,200
Business restructuring	0	12,000,000	0	208,000,000	0	208,000,000
Severance and other costs				160,000,000
Asset write-offs				53,000,000
Pension curtailments				5,000,000
Costs associated with restructuring actions for demolition, dismantling, relocation and training				5,000,000
Restructuring reserve	36,000,000				36,000,000
Payments for restructuring					37,000,000	33,000,000
Restructuring Reserve, Accrual Adjustment		12,000,000
Number Of Employees Impacted	95	273
Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Payments for restructuring				$ 3,000,000