Leases (Tables)

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

Lease Cost

Lease Cost:

	For the Year Ended December 31,
(In millions)	2021		2020		2019
Finance lease cost	$	4	$	3	$	—
Operating lease cost	91		100		109
Short-term lease cost	3		3		3
Variable lease cost	9		6		6
Sublease income	(2)		(17)		(17)
Total lease cost	$	105	$	95	$	101

Other information:

	For the Year Ended December 31,
(In millions)	2021		2020		2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	102	$	101	$	104
Financing cash flows from finance leases	6		1		—
Right-of-use assets obtained in exchange for new finance lease liabilities	16		5		—
Right-of-use assets obtained in exchange for new operating lease liabilities	47		4		215

Lease Term and Discount Rate for leases:

	December 31, 2021		December 31, 2020
Finance leases:
Weighted average remaining lease term (in years)	3.6		1.1
Weighted average discount rate	2.46	%	4.79	%
Operating leases:
Weighted average remaining lease term (in years)	4.7		5.3
Weighted average discount rate	5.44	%	5.63	%

Schedule of Annual Payments Based on Maturities of Leases

As of December 31, 2021, annual payments based on the maturities of NRG's operating leases are expected to be as follows:

	In millions
2022	$	96
2023	89
2024	76
2025	52
2026	11
Thereafter	48
Total undiscounted lease payments	$	372
Less: present value adjustment	(55)
Total discounted lease payments	$	317