Introduction (Tables)

3 Months Ended

Mar. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Goodwill

Goodwill at March 31, 2021 and December 31, 2020 was as follows:

	Goodwill
	(in millions)
Southern Company	$	5,280
Southern Company Gas:
Gas distribution operations	$	4,034
Gas marketing services	981
Southern Company Gas total	$	5,015

Schedule of Other Intangible Assets, Indefinite-Lived

Other intangible assets were as follows:

	At March 31, 2021						At December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Other Intangible Assets, Net		Gross Carrying Amount		Accumulated Amortization		Other Intangible Assets, Net
	(in millions)						(in millions)
Southern Company
Other intangible assets subject to amortization:
Customer relationships	$	212	$	(139)	$	73	$	212	$	(135)	$	77
Trade names	64		(33)		31		64		(31)		33
Storage and transportation contracts	64		(64)		—		64		(64)		—
PPA fair value adjustments	390		(94)		296		390		(89)		301
Other	11		(9)		2		10		(9)		1
Total other intangible assets subject to amortization	$	741	$	(339)	$	402	$	740	$	(328)	$	412
Other intangible assets not subject to amortization:
Federal Communications Commission licenses	75		—		75		75		—		75
Total other intangible assets	$	816	$	(339)	$	477	$	815	$	(328)	$	487
Southern Power
Other intangible assets subject to amortization:
PPA fair value adjustments	$	390	$	(94)	$	296	$	390	$	(89)	$	301
Southern Company Gas
Other intangible assets subject to amortization:
Gas marketing services
Customer relationships	$	156	$	(122)	$	34	$	156	$	(119)	$	37
Trade names	26		(13)		13		26		(12)		14
Wholesale gas services
Storage and transportation contracts	64		(64)		—		64		(64)		—
Total other intangible assets subject to amortization	$	246	$	(199)	$	47	$	246	$	(195)	$	51

Schedule of Other Intangible Assets, Finite-Lived

Other intangible assets were as follows:

	At March 31, 2021						At December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Other Intangible Assets, Net		Gross Carrying Amount		Accumulated Amortization		Other Intangible Assets, Net
	(in millions)						(in millions)
Southern Company
Other intangible assets subject to amortization:
Customer relationships	$	212	$	(139)	$	73	$	212	$	(135)	$	77
Trade names	64		(33)		31		64		(31)		33
Storage and transportation contracts	64		(64)		—		64		(64)		—
PPA fair value adjustments	390		(94)		296		390		(89)		301
Other	11		(9)		2		10		(9)		1
Total other intangible assets subject to amortization	$	741	$	(339)	$	402	$	740	$	(328)	$	412
Other intangible assets not subject to amortization:
Federal Communications Commission licenses	75		—		75		75		—		75
Total other intangible assets	$	816	$	(339)	$	477	$	815	$	(328)	$	487
Southern Power
Other intangible assets subject to amortization:
PPA fair value adjustments	$	390	$	(94)	$	296	$	390	$	(89)	$	301
Southern Company Gas
Other intangible assets subject to amortization:
Gas marketing services
Customer relationships	$	156	$	(122)	$	34	$	156	$	(119)	$	37
Trade names	26		(13)		13		26		(12)		14
Wholesale gas services
Storage and transportation contracts	64		(64)		—		64		(64)		—
Total other intangible assets subject to amortization	$	246	$	(199)	$	47	$	246	$	(195)	$	51

Schedule of Amortization of Other Intangible Assets

Amortization associated with other intangible assets was as follows:

	Three Months Ended
	March 31, 2021
	(in millions)
Southern Company(a)	$	11
Southern Power(b)	5
Southern Company Gas(c)	4

(a)Includes $5 million recorded as a reduction to operating revenues.

(b)Recorded as a reduction to operating revenues.

(c)Relates to gas marketing services.

Schedule of Restrictions on Cash and Cash Equivalents

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the condensed balance sheets that total to the amount shown in the condensed statements of cash flows for the Registrants that had restricted cash at March 31, 2021 and/or December 31, 2020:

	Southern Company					Southern Power		Southern Company Gas
	March 31, 2021		December 31, 2020			March 31, 2021		March 31, 2021		December 31, 2020
	(in millions)					(in millions)		(in millions)
Cash and cash equivalents	$	1,770	$	1,065		$	314	$	309	$	17
Restricted cash(a):
Other current assets	2		2			—		2		2
Other deferred charges and assets	29		—			29		—		—
Total cash, cash equivalents, and restricted cash	$	1,801	$	1,068	(b)	$	343	$	311	$	19

(a)For Southern Company Gas, reflects restricted cash held as collateral for workers' compensation, life insurance, and long-term disability insurance. For Southern Power, reflects restricted cash held for construction payables.

(b)Total does not add due to rounding.

Schedule of Cash and Cash Equivalents

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the condensed balance sheets that total to the amount shown in the condensed statements of cash flows for the Registrants that had restricted cash at March 31, 2021 and/or December 31, 2020:

	Southern Company					Southern Power		Southern Company Gas
	March 31, 2021		December 31, 2020			March 31, 2021		March 31, 2021		December 31, 2020
	(in millions)					(in millions)		(in millions)
Cash and cash equivalents	$	1,770	$	1,065		$	314	$	309	$	17
Restricted cash(a):
Other current assets	2		2			—		2		2
Other deferred charges and assets	29		—			29		—		—
Total cash, cash equivalents, and restricted cash	$	1,801	$	1,068	(b)	$	343	$	311	$	19

(a)For Southern Company Gas, reflects restricted cash held as collateral for workers' compensation, life insurance, and long-term disability insurance. For Southern Power, reflects restricted cash held for construction payables.

(b)Total does not add due to rounding.