Capital Stock (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended	12 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Oct. 29, 2025	Jan. 31, 2025	Mar. 31, 2024	Jan. 31, 2024
Class of Stock [Line Items]
Common stock, shares authorized (in shares)				12,000,000,000
Common stock, dividend increase, percentage	3.90%
Cash dividends declared (USD per share)	$ 1.06	$ 1.02		$ 4.16	$ 4.00	$ 3.84
Common stock, dividend rate, annual, per share (USD per share)				$ 4.24
Repurchase of common stock (in shares)				17,094,596	73,497,623	22,748,842
January 2023 Share Repurchase Program [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount										$ 1,000,000,000.0
Repurchase of common stock (in shares)						22,700,000
January 2024 Share Repurchase Program [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount									$ 3,400,000,000	$ 1,000,000,000.0
Repurchase of common stock (in shares)					73,500,000
ASR Agreements [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount			$ 2,400,000,000
Repurchase of common stock (in shares)			53,900,000		53,900,000
January 2025 Share Repurchase Program [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount							$ 2,000,000,000.0	$ 1,000,000,000.0
Repurchase of common stock (in shares)				17,100,000
Stock repurchase program, remaining authorized repurchase amount				$ 1,000,000,000.0
Serial Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)				10,000,000
Preferred stock, par value (USD per share)				$ 1.00
Preferred stock, shares issued (in shares)				0
Share-based Payment Arrangement [Member]
Class of Stock [Line Items]
Shares of common stock reserved for stock-based awards (in shares)				31,134,469