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Stockholder Return Programs (Details) - USD ($) $ / shares in Units, $ in Millions					1 Months Ended	3 Months Ended					9 Months Ended	12 Months Ended
	Dec. 11, 2025	Sep. 11, 2025	Jun. 12, 2025	Mar. 13, 2025	Feb. 06, 2026	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 13, 2024	Sep. 06, 2023	Sep. 08, 2022
Equity, Class of Treasury Stock [Line Items]
Purchase price												$ 9,957	$ 11,206	$ 13,255
Dividends on common stock												$ 4,121	$ 3,300	$ 747
Common stock, dividends declared (in USD per share)												$ 3.80	$ 3.71	$ 0.65
2022 Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount																	$ 14,000
Repurchases of common stock (in shares)											77,460,937
Average price paid per share (in USD per share)											$ 141.57
Purchase price											$ 11,000
2023-2024 Stockholder Return Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount																$ 19,000
Repurchases of common stock (in shares)													59,376,922	15,464,107
Average price paid per share (in USD per share)													$ 144.95	$ 187.07
Purchase price													$ 11,100	$ 2,200
Dividends on common stock												$ 4,100	3,300	747
2023-2024 Stockholder Return Program \| DT
Equity, Class of Treasury Stock [Line Items]
Dividends on common stock													$ 1,700	$ 393
2025 Stockholder Return Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount															$ 14,000
Repurchases of common stock (in shares)												42,363,226
Average price paid per share (in USD per share)												$ 232.96
Purchase price												$ 9,900
Dividends on common stock												4,100
Common stock, dividends paid (in USD per share)				$ 1.02
Stock repurchase authorization amount						$ 14,600						14,600
2025 Stockholder Return Program \| DT
Equity, Class of Treasury Stock [Line Items]
Dividends on common stock												2,100
2025 Stockholder Return Program \| 2024 Q4 Dividends Declared
Equity, Class of Treasury Stock [Line Items]
Common stock, dividends declared (in USD per share)										$ 0.88
Common stock, dividends paid (in USD per share)				$ 0.88
2025 Stockholder Return Program \| 2025 Q1 Dividends Declared
Equity, Class of Treasury Stock [Line Items]
Common stock, dividends declared (in USD per share)									$ 0.88
Common stock, dividends paid (in USD per share)			$ 0.88
2025 Stockholder Return Program \| 2025 Q2 Dividends Declared
Equity, Class of Treasury Stock [Line Items]
Common stock, dividends declared (in USD per share)								$ 0.88
Common stock, dividends paid (in USD per share)		$ 0.88
2025 Stockholder Return Program \| 2025 Q3 Dividends Declared
Equity, Class of Treasury Stock [Line Items]
Common stock, dividends declared (in USD per share)							$ 1.02
Common stock, dividends paid (in USD per share)	$ 1.02
2025 Stockholder Return Program \| 2025 Q4 Dividends Declared
Equity, Class of Treasury Stock [Line Items]
Common stock, dividends declared (in USD per share)						$ 1.02
2026 Stockholder Return Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount	$ 14,600
Dividends payable						$ 1,100						1,100
2026 Stockholder Return Program \| Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Repurchases of common stock (in shares)					5,106,691
Average price paid per share (in USD per share)					$ 192.61
Purchase price					$ 984
Stock repurchase authorization amount					$ 13,600
2026 Stockholder Return Program \| DT
Equity, Class of Treasury Stock [Line Items]
Dividends payable						$ 594						$ 594