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Long-term Debt and Finance Leases - Schedule of Long-term Debt and Finance Leases (Details) $ / shares in Units, $ in Millions		12 Months Ended
	Jan. 31, 2024 $ / shares	Dec. 31, 2023 USD ($) $ / shares	Dec. 31, 2022 USD ($) $ / shares	Aug. 23, 2021	Dec. 02, 2020	May 24, 2019	Dec. 07, 2017	Aug. 02, 2016
Debt Instrument [Line Items]
Long-term debt		$ 10,940	$ 8,100
Finance leases		$ 19	$ 11
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]		Total long-term debt and finance leases	Total long-term debt and finance leases
Total long-term debt and finance lease obligations		$ 10,959	$ 8,111
Less current maturities		(620)	(63)
Less debt issuance costs		(60)	(70)
Discounts		(146)	(2)
Total long-term debt and finance leases		10,133	7,976
Debt Instrument, Unamortized Discount [Abstract]
Total discounts		$ (146)	(2)
Senior Notes, due 2027
Debt Instrument [Line Items]
Interest rate, stated percentage		6.625%
Tax-exempt bonds
Debt Instrument [Line Items]
Long-term debt		$ 466	466
Recourse Debt
Debt Instrument [Line Items]
Long-term debt		8,220	8,100
Recourse Debt \| Senior Notes, due 2027
Debt Instrument [Line Items]
Long-term debt		$ 375	375
Interest rate, stated percentage		6.625%						6.625%
Recourse Debt \| Senior Notes, due 2028
Debt Instrument [Line Items]
Long-term debt		$ 821	821
Interest rate, stated percentage		5.75%					5.75%
Recourse Debt \| Senior Notes, due 2029
Debt Instrument [Line Items]
Long-term debt		$ 733	733
Interest rate, stated percentage		5.25%				5.25%
Recourse Debt \| Senior Notes, due 2029
Debt Instrument [Line Items]
Long-term debt		$ 500	500
Interest rate, stated percentage		3.375%			3.375%
Recourse Debt \| Senior Notes, due 2031
Debt Instrument [Line Items]
Long-term debt		$ 1,030	1,030
Interest rate, stated percentage		3.625%
Recourse Debt \| Senior Notes, due 2032
Debt Instrument [Line Items]
Long-term debt		$ 480	1,100
Interest rate, stated percentage		3.875%		3.875%
Recourse Debt \| Convertible Senior Notes Due 2048
Debt Instrument [Line Items]
Long-term debt		$ 575	575
Discounts		$ (12)	$ 0
Interest rate, stated percentage		2.75%
Conversion price per common share (in usd per share) \| $ / shares		$ 41.83	$ 43.46
Conversion ratio		0.0239079	0.0230116
Debt Instrument, Unamortized Discount [Abstract]
Total discounts		$ (12)	$ 0
Recourse Debt \| Convertible Senior Notes Due 2048 \| Subsequent Event
Debt Instrument [Line Items]
Conversion price per common share (in usd per share) \| $ / shares	$ 41.53
Conversion ratio	0.0240763
Recourse Debt \| Senior Secured First Lien Notes, due 2024
Debt Instrument [Line Items]
Long-term debt		$ 600	600
Interest rate, stated percentage		3.75%
Recourse Debt \| Senior Secured First Lien Notes, due 2025
Debt Instrument [Line Items]
Long-term debt		$ 500	500
Interest rate, stated percentage		2.00%
Recourse Debt \| Senior Secured First Lien Notes, due 2027
Debt Instrument [Line Items]
Long-term debt		$ 900	900
Interest rate, stated percentage		2.45%
Recourse Debt \| Senior Secured First Lien Notes, due 2029
Debt Instrument [Line Items]
Long-term debt		$ 500	500
Interest rate, stated percentage		4.45%
Recourse Debt \| Senior Secured First Lien Notes, due 2033
Debt Instrument [Line Items]
Long-term debt		$ 740	0
Interest rate, stated percentage		7.00%
Recourse Debt \| Tax-exempt bonds
Debt Instrument [Line Items]
Long-term debt		$ 466	466
Recourse Debt \| Tax-exempt bonds \| Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage		1.25%
Recourse Debt \| Tax-exempt bonds \| Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage		4.75%
Recourse Debt \| Senior Secured First Lien Notes, due 2024, 2025, 2027, 2029 and 2033
Debt Instrument [Line Items]
Discounts		$ (10)	(2)
Debt Instrument, Unamortized Discount [Abstract]
Total discounts		(10)	(2)
Non Recourse Debt
Debt Instrument [Line Items]
Long-term debt		2,720	0
Non Recourse Debt \| Vivint 5.750% Senior Secured Notes due 2029
Debt Instrument [Line Items]
Long-term debt		800	0
Discounts		$ (103)	0
Interest rate, stated percentage		5.75%
Debt Instrument, Unamortized Discount [Abstract]
Total discounts		$ (103)	0
Non Recourse Debt \| Vivint 6.750% Senior Secured Notes due 2027
Debt Instrument [Line Items]
Long-term debt		$ 600	0
Interest rate, stated percentage		6.75%
Non Recourse Debt \| Vivint Senior Secured Notes due 2028
Debt Instrument [Line Items]
Long-term debt		$ 1,320	0
Discounts		(21)	0
Debt Instrument, Unamortized Discount [Abstract]
Total discounts		$ (21)	$ 0
Non Recourse Debt \| Vivint Senior Secured Notes due 2028 \| SOFR
Debt Instrument [Line Items]
Interest rate, stated percentage		3.51%