XML 63 R51.htm IDEA: XBRL DOCUMENT v3.19.2
DERIVATIVE INSTRUMENTS - Additional Information (Detail)
$ in Millions
Jun. 30, 2019
USD ($)
counterparties
Dec. 31, 2018
USD ($)
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Cash flow hedging activity, maximum time period 7  
Number of counterparties | counterparties 17  
Number of counterparties that comprise majority of aggregate notional amount of swaps | counterparties 4  
Percentage of notional amount of swaps from certain number of counterparties 66.00%  
Derivative, net liability position, aggregate fair value $ 54 $ 139
Additional collateral, aggregate fair value 39  
4.00% senior notes due February 2022    
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Debt instrument, principal amount 350  
3.625% senior notes due June 2023    
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Debt instrument, principal amount 700  
3.625% senior notes due November 2024    
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Debt instrument, principal amount 750  
3.25% senior notes due March 2025    
Derivative Instruments and Hedging Activities Disclosure [Line Items]    
Debt instrument, principal amount $ 450