Equity - Share Repurchases, Dividends, Stock-Based Compensation (Details) $ / shares in Units, $ in Millions	1 Months Ended			3 Months Ended					6 Months Ended
	Jul. 22, 2025 $ / shares shares	May 31, 2025 shares	Feb. 28, 2025 shares	Jun. 30, 2025 USD ($) item $ / shares shares	Mar. 31, 2025 USD ($) $ / shares shares	Jun. 30, 2024 USD ($) $ / shares shares	Mar. 31, 2024 $ / shares	Mar. 31, 2023 $ / shares	Jun. 30, 2025 USD ($) item $ / shares shares	Jun. 30, 2024 USD ($) $ / shares shares	Oct. 22, 2024 USD ($)
Share Repurchase Plan
Value of shares authorized by the Board of Directors to be repurchased under share repurchase plan | $											$ 1,500.0
Shares				301,279	922,656	1,804,180			1,223,935	1,804,180
Average Cost Per Share | $ / shares				$ 265.17	$ 274.41	$ 287.81			$ 272.13	$ 287.81
Amount | $				$ 79.9	$ 253.2	$ 519.3			$ 333.1	$ 519.3
Dividends
Number of consecutive years of quarterly cash dividends paid | item				66
Common stock quarterly dividend per share (in dollars per share) | $ / shares				$ 1.2	$ 1.2	$ 1.1	$ 1.1	$ 1	$ 2.4	$ 2.2
Votes per share of common stock | item				1					1
Additional share-based compensation disclosures
Total unrecognized compensation cost | $				$ 89.2					$ 89.2
Weighted average recognition period for unrecognized compensation cost (in years)				1 year 10 months 24 days					1 year 10 months 24 days
Q3 2025 Dividends | Subsequent event
Dividends
Common stock dividend quarterly declared and paid per share (in dollars per share) | $ / shares	$ 1.2
Dividend date of declaration	Jul. 22, 2025
Dividend date payable	Aug. 29, 2025
Dividend date of record	Aug. 15, 2025
Restricted stock units (RSUs)
Additional share-based compensation disclosures
Vesting period (in years)		3 years	3 years						3 years	3 years
Changes
Granted (in shares)		509	96,973
Restricted stock units (RSUs) and performance stock units (PSUs)
Common Stock and Additional Paid-In (in Shares)
Shares withheld related to share settlements | $									$ 11.6	$ 24.1
Changes
Unvested as of the beginning of the period (in units)	483,374				327,017				327,017
Granted (in shares)									163,409
Vested (in units)									(1,260)
Cancelled or forfeited (in units)									(5,792)
Unvested as of the end of the period (in units)				483,374					483,374
Shares reserved for future issuance (all plans)				1,221,197					1,221,197
Weighted Average Grant Date Fair Value
Unvested as of the beginning of the period (in dollars per unit) | $ / shares	$ 278.52				$ 267.96				$ 267.96
Granted (in dollars per unit) | $ / shares									299.37
Vested (in dollars per unit) | $ / shares									263.38
Cancelled or forfeited (in dollars per unit) | $ / shares									273.86
Unvested as of the end of the period (in dollars per unit) | $ / shares				$ 278.52					$ 278.52
Performance stock units (PSUs)
Additional share-based compensation disclosures
Vesting period (in years)			3 years						3 years	3 years
Return on assets result period			3 years						3 years	3 years
Changes
Granted (in shares)			65,927
Performance stock units (PSUs) | Maximum
Stock Based Compensation
Share of Common Stock			2						2	2