Commitments and Contingencies (Environmental) (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended
	Feb. 28, 2014	Dec. 31, 2013	Dec. 31, 2012
Site Contingency [Line Items]
Penalty in excess of $100,000	$ 2
Accrual for Environmental Loss Contingencies Disclosure [Abstract]
Accrued liabilities for environmental matters		66	72
Superfund Sites [Member]
Accrual for Environmental Loss Contingencies Disclosure [Abstract]
Number of superfund sites		9
Accrual for site contingency		$ 5