Fair Value Measurements (Details 1) (Fair Value, Measurements, Nonrecurring [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Properties, plant and equipment, net (held and used)	$ 19	$ 19
Properties, plant and equipment, net (held for sale)	0	0
Investments and advances	1	1
Total Assets at Fair Value	20	20
Properties, plant and equipment, net (held and used) Before-Tax Loss	93	560
Properties, plant and equipment, net (held for sale) Before-Tax Loss	0	0
Investments and advances Before Tax Loss	4	31
Total Assets at Fair Value Before-Tax Loss	97	591
Level 1 [Member]
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Properties, plant and equipment, net (held and used)	0	0
Properties, plant and equipment, net (held for sale)	0	0
Investments and advances	0	0
Total Assets at Fair Value	0	0
Level 2 [Member]
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Properties, plant and equipment, net (held and used)	0	0
Properties, plant and equipment, net (held for sale)	0	0
Investments and advances	0	0
Total Assets at Fair Value	0	0
Level 3 [Member]
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Properties, plant and equipment, net (held and used)	19	19
Properties, plant and equipment, net (held for sale)	0	0
Investments and advances	1	1
Total Assets at Fair Value	$ 20	$ 20