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Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		12 Months Ended
	Mar. 31, 2026	Mar. 31, 2024	Jan. 31, 2026	Feb. 01, 2025	Feb. 03, 2024	Mar. 03, 2026
Equity, Class of Treasury Stock [Line Items]
Stock repurchased program period		2 years			2 years
Stock repurchase program, approved amount		$ 2,100,000			$ 1,900,000
Treasury stock, number of shares held (in shares)			17,000,000.0	16,400,000
Preferred stock, shares authorized (in shares)			4,000,000.0
Preferred stock, par value (in dollars per share)			$ 0.01
Preferred stock, shares issued (in shares)			0
Preferred stock, shares outstanding (in shares)			0
Dividends declared per share (in dollars per share)			$ 1.62	$ 1.47	$ 1.34
Dividends paid			$ 528,085	$ 488,721	$ 454,814
May 2025 Dividends
Equity, Class of Treasury Stock [Line Items]
Dividends declared per share (in dollars per share)			$ 0.4050
August 2025 Dividends
Equity, Class of Treasury Stock [Line Items]
Dividends declared per share (in dollars per share)			0.4050
November 2025 Dividends
Equity, Class of Treasury Stock [Line Items]
Dividends declared per share (in dollars per share)			0.4050
March 2025 Dividends
Equity, Class of Treasury Stock [Line Items]
Dividends declared per share (in dollars per share)			$ 0.4050
November 2024 Dividends
Equity, Class of Treasury Stock [Line Items]
Dividends declared per share (in dollars per share)				$ 0.3675
August 2024 Dividends
Equity, Class of Treasury Stock [Line Items]
Dividends declared per share (in dollars per share)				0.3675
March 2024 Dividends
Equity, Class of Treasury Stock [Line Items]
Dividends declared per share (in dollars per share)				0.3675
May 2024 Dividends
Equity, Class of Treasury Stock [Line Items]
Dividends declared per share (in dollars per share)				$ 0.3675
February 2023 Dividends
Equity, Class of Treasury Stock [Line Items]
Dividends declared per share (in dollars per share)					$ 0.3350
May 2023 Dividends
Equity, Class of Treasury Stock [Line Items]
Dividends declared per share (in dollars per share)					0.3350
August 2023 Dividends
Equity, Class of Treasury Stock [Line Items]
Dividends declared per share (in dollars per share)					0.3350
November 2023 Dividends
Equity, Class of Treasury Stock [Line Items]
Dividends declared per share (in dollars per share)					$ 0.3350
Restricted stock \| Treasury stock
Equity, Class of Treasury Stock [Line Items]
Shares withheld for tax withholding obligation (in shares)			600,000	600,000	500,000
Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Stock repurchased program period	2 years
Stock repurchase program, approved amount	$ 2,550,000
Dividends payable (in dollars per share)						$ 0.4450