Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities - Additional Information (Details)

v3.3.0.814
Derivative Instruments and Hedging Activities - Additional Information (Details) - USD ($)
 3 Months Ended
Sep. 30, 2015
Jun. 30, 2015
Dec. 31, 2014
Nov. 30, 2014
Oct. 31, 2014
Derivative [Line Items]          
Unrealized gains recognized within accumulated other comprehensive income, gross unamortized $ 3,104,000 $ 4,553,000      
Senior Notes          
Derivative [Line Items]          
Debt instrument, face amount       $ 2,500,000,000.0  
Fixed-rate 4.650% Senior notes due on November 1, 2024 | Senior Notes          
Derivative [Line Items]          
Debt instrument, face amount         $ 1,250,000,000
Stated interest rate 4.65% [1] 4.65% [1]     4.65%
Derivatives Designated as Hedging Instruments          
Derivative [Line Items]          
Hedge contracts maximum maturity 13 months        
Cash Flow Hedging | Derivatives Designated as Hedging Instruments          
Derivative [Line Items]          
Derivative maximum maturity, cash flow hedges 18 months        
Cash Flow Hedging | Derivatives Designated as Hedging Instruments | Senior Notes | Treasury Lock | Non-Designated Forward Contracts | Portion of senior notes          
Derivative [Line Items]          
Notional amount of derivative         $ 1,000,000,000.00
Unrealized gains recognized within accumulated other comprehensive income, gross unamortized     $ 7,500,000    
Cash Flow Hedging | Derivatives Designated as Hedging Instruments | Senior Notes | Treasury Lock | Non-Designated Forward Contracts | Portion of senior notes | Interest expense          
Derivative [Line Items]          
Unrealized gains recognized within accumulated other comprehensive income, gross unamortized $ 6,900,000        
Recognition of gain amortized in accumulated other comprehensive income (loss) $ 200,000        
[1] The effective interest rate disclosed above for this series of Senior Notes excludes the impact of the treasury rate lock hedge discussed below. The effective interest rate including the impact of the treasury rate lock hedge was 4.626%.