Hedging Exposure Future Cash Flows with Interest Rate Swaps For Forecasted Transactions (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Derivative Instruments Gain Loss [Line Items]
Weighted Average Fixed Interest Rate in Contract	1.30%
Wtd. Avg. Remaining Term in Months	17 months
Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Notional Amount	$ 9,200,000
12 Months or Less
Derivative Instruments Gain Loss [Line Items]
Weighted Average Fixed Interest Rate in Contract	1.70%
Wtd. Avg. Remaining Term in Months	7 months
Maturity - lower remaining maturity range	0 months
Maturity - higher remaining maturity range	12 months
12 Months or Less | Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Notional Amount	4,000,000
Over 12 Months to 24 Months
Derivative Instruments Gain Loss [Line Items]
Weighted Average Fixed Interest Rate in Contract	1.10%
Wtd. Avg. Remaining Term in Months	18 months
Maturity - lower remaining maturity range	12 months
Maturity - higher remaining maturity range	24 months
Over 12 Months to 24 Months | Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Notional Amount	2,400,000
Over 24 Months to 36 Months
Derivative Instruments Gain Loss [Line Items]
Weighted Average Fixed Interest Rate in Contract	0.88%
Wtd. Avg. Remaining Term in Months	30 months
Maturity - lower remaining maturity range	24 months
Maturity - higher remaining maturity range	36 months
Over 24 Months to 36 Months | Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Notional Amount	2,200,000
Over 36 Months to 48 Months
Derivative Instruments Gain Loss [Line Items]
Weighted Average Fixed Interest Rate in Contract	0.95%
Wtd. Avg. Remaining Term in Months	40 months
Maturity - lower remaining maturity range	36 months
Maturity - higher remaining maturity range	48 months
Over 36 Months to 48 Months | Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Notional Amount	$ 600,000