Capital Structure - Common Stock and Share Repurchases Narrative (Details) - USD ($)					1 Months Ended		2 Months Ended	3 Months Ended			5 Months Ended	7 Months Ended	12 Months Ended
		Jan. 30, 2026	Jan. 21, 2026	Oct. 16, 2025	Jan. 31, 2026	Jun. 30, 2023	Dec. 31, 2024	Mar. 31, 2026	Mar. 31, 2024	Dec. 31, 2023	Dec. 31, 2025	Jul. 29, 2025	Dec. 31, 2025		Dec. 31, 2024	Dec. 31, 2023	Nov. 06, 2023	Oct. 31, 2023
Equity, Class of Treasury Stock [Line Items]
Common stock, par or value (in usd per share)							$ 0.01				$ 0.01		$ 0.01		$ 0.01
Quarterly dividends per share (usd per share)													0.4400		0.4075	$ 0.3775
Dividends paid per share (in usd per share)													$ 1.76		$ 1.63	$ 1.51
Common stock, annual dividends increase, percentage													8.00%		8.00%	8.00%
Eligible compensation withholding, minimum, percentage											1.00%	1.00%
Eligible compensation withholding, maximum, percentage											100.00%	10.00%
Market value on offering date percentage													90.00%
Exercise price as a percentage of fair value (as a percent)													90.00%
Treasury stock reserved for issuance under the ESPP (in shares)											6,284,148		6,284,148
Shares repurchased recorded in treasury	[2]												$ 1,313,000,000	[1]	$ 934,000,000	$ 1,160,000,000
Treasury Stock
Equity, Class of Treasury Stock [Line Items]
Shares repurchased recorded in treasury	[2]												1,313,000,000	[1]	1,051,000,000	1,043,000,000
Additional Paid-In Capital
Equity, Class of Treasury Stock [Line Items]
Shares repurchased recorded in treasury	[2]													[1]	$ (117,000,000)	$ 117,000,000
November 2023 Accelerated Share Repurchase Agreements
Equity, Class of Treasury Stock [Line Items]
Accelerated share repurchases, agreement amount																	$ 950,000,000
Shares, repurchased (in shares)							18,839,375		1,163,230	17,676,142
November 2023 Accelerated Share Repurchase Agreements | Treasury Stock
Equity, Class of Treasury Stock [Line Items]
Shares repurchased recorded in treasury										$ 833,000,000
November 2023 Accelerated Share Repurchase Agreements | Additional Paid-In Capital
Equity, Class of Treasury Stock [Line Items]
Shares repurchased recorded in treasury									$ 117,000,000	$ 117,000,000
2023 Capital Allocation Plan
Equity, Class of Treasury Stock [Line Items]
Target allocation, return to shareholders, percent of cash available						80.00%
Stock repurchase program, authorized amount																		$ 3,700,000,000
Share repurchases additional authorized				$ 3,000,000,000.0
Open market repurchases
Equity, Class of Treasury Stock [Line Items]
Shares, repurchased (in shares)													9,971,620		10,562,333	5,054,798
Shares repurchased recorded in treasury													$ 1,302,000,000		$ 925,000,000	$ 200,000,000
Minimum
Equity, Class of Treasury Stock [Line Items]
Annual dividend growth rate, percentage													7.00%
Maximum
Equity, Class of Treasury Stock [Line Items]
Annual dividend growth rate, percentage													9.00%
Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Dividends payable quarterly (in usd per share)			$ 0.475
Dividends per common share (in usd per share)			$ 1.90
Shares, repurchased (in shares)					656,900
Shares repurchased recorded in treasury					$ 100,000,000
Subsequent Event | Scenario, Plan
Equity, Class of Treasury Stock [Line Items]
Common stock, annual dividends increase, percentage								8.00%
Dividends per common share (in usd per share)								$ 1.90
LS Power Portfolio | Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Acquisition, shares issued (in shares)		24,250,000
LS Power Portfolio | Common Stock | Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Acquisition, shares issued (in shares)		24,250,000
Common stock, par or value (in usd per share)		$ 0.01
Long-term incentive plans
Equity, Class of Treasury Stock [Line Items]
Long-term incentive plans (in shares)											23,607,174		23,607,174

[1] Excludes $16 million of payments for shares received from the exercise of the Capped Call Options. For further discussion, see Note 15, Capital Structure

[2] Includes excise tax accrued of $11 million, $9 million and $10 million for the years ended December 31, 2025, 2024 and 2023, respectively. For further discussion of the share repurchases, see Note 15, Capital Structure