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Leases (Tables)
3 Months Ended
Mar. 31, 2019
Leases [Abstract]  
Lease, Cost and Other Information
Lease Cost:
(In millions)
Three months ended March 31, 2019
Operating lease cost
$
23

Variable lease cost
1

Sublease income
(4
)
Total lease cost
$
20

Other information:
(In millions)
Three months ended March 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:


   Operating cash flows from operating leases
$
21

Right-of-use assets obtained in exchange for new operating lease liabilities
214

Lease Term and Discount Rate:
Weighted-average remaining lease term
In Years
Finance leases
2.8
Operating leases
8.2
 
 
Weighted-average discount rate
%
Finance leases
6.5
Operating leases
5.7
Schedule of Annual Payments Based on Maturities of Leases
As of March 31, 2019, annual payments based on the maturities of NRG's leases are expected to be as follows:
 
(In millions)
Remainder of 2019
$
76

2020
96

2021
86

2022
85

2023
86

Thereafter
370

Total undiscounted lease payments
$
799

Less: present value adjustment
(196
)
Total discounted lease payments
$
603