Summary of Significant Accounting and Reporting Policies - Noncontrolling Interests (Details) - NEER [Member] $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) MW	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Summary of Significant Accounting Policies [Line Items]
income associated with differential membership interests | $	$ 1,135	$ 987	$ 825
Differential Membership Interests
Summary of Significant Accounting Policies [Line Items]
Noncontrolling Interests associated with Differential Membership Interests | $	$ (8,857)	$ (7,610)
Variable Interest Entity, Primary Beneficiary [Member]
Summary of Significant Accounting Policies [Line Items]
Wind Electric Generating Facility Capability	13,527
Solar generating facility capability	4,049
Battery Storage Facility Capability [Line Items]	1,077