Lawsuits, Claims, Commitments and Contingencies (Details) (USD $)	12 Months Ended
	Dec. 31, 2014
Purchase obligations
State of New Jersey	State of New Jersey
Litigation Settlement, Amount	$ 190,000,000
Long term purchase and contractual obligations
Purchase obligations
Total purchase obligations	10,000,000,000
Purchase obligations, due in fiscal year 2015	3,300,000,000
Purchase obligations, due in fiscal year 2016	1,700,000,000
Purchase obligations, due in fiscal year 2017	1,000,000,000
Purchase obligations, due in fiscal year 2018	700,000,000
Purchase obligations, due in fiscal year 2019	500,000,000
Capital Additions
Purchase obligations
Commitments for major fixed and determinable capital expenditures during 2014 and thereafter	$ 1,400,000,000