Derivative Financial Instruments (Contractual and Weighted-Average Interest Rates, Which Include the Effects of Hedges Related to Financial Instruments) (Details) (Long-term debt)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Long-term debt
Derivative [Line Items]
Contractual Rates	3.46%	4.01%
Rate Including Impact of Hedges	2.75%	3.17%