v3.26.1
FINANCIAL DATA BY SEGMENT - Schedule of Financial Data Segment Reporting Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Segment Reporting [Line Items]      
Revenues $ 7,476.8 $ 6,889.1 $ 6,506.8
Depreciation and amortization 137.7 130.7 119.8
Amortization of acquired intangibles 203.6 196.6 200.3
Amortization of other assets 167.1 170.8 157.8
Other direct expenses 5,522.6 5,332.2 5,151.5
Other segment items 0.0 0.0 0.0
Earnings before income taxes 1,445.8 1,058.7 877.4
Segment Reporting, Reconciling Item, Corporate Nonsegment      
Segment Reporting [Line Items]      
Revenues 0.0 0.0 0.0
Depreciation and amortization 43.5 33.2 30.3
Amortization of acquired intangibles 0.0 0.0 0.0
Amortization of other assets 22.6 17.5 16.7
Other direct expenses 429.6 593.4 604.3
Other segment items (540.2) (447.5) (404.9)
Earnings before income taxes 44.5 (196.7) (246.3)
Investor Communication Solutions      
Segment Reporting [Line Items]      
Revenues 5,560.8 5,113.0 4,857.9
Investor Communication Solutions | Operating Segments      
Segment Reporting [Line Items]      
Revenues 5,560.8 5,113.0 4,857.9
Depreciation and amortization 46.7 44.7 40.1
Amortization of acquired intangibles 42.7 42.9 45.4
Amortization of other assets 37.6 39.4 38.5
Other direct expenses 3,938.2 3,633.2 3,514.5
Other segment items 392.1 298.8 269.0
Earnings before income taxes 1,103.5 1,054.0 950.4
Global Technology and Operations | Operating Segments      
Segment Reporting [Line Items]      
Revenues 1,916.0 1,776.1 1,648.9
Depreciation and amortization 47.5 52.8 49.4
Amortization of acquired intangibles 160.9 153.7 154.9
Amortization of other assets 106.9 113.9 102.6
Other direct expenses 1,154.8 1,105.6 1,032.7
Other segment items 148.1 148.7 135.9
Earnings before income taxes 297.8 201.4 173.3
Total Reportable Segments | Operating Segments      
Segment Reporting [Line Items]      
Revenues 7,476.8 6,889.1 6,506.8
Depreciation and amortization 94.2 97.5 89.5
Amortization of acquired intangibles 203.6 196.6 200.3
Amortization of other assets 144.5 153.3 141.1
Other direct expenses 5,093.0 4,738.8 4,547.2
Other segment items 540.2 447.5 404.9
Earnings before income taxes $ 1,401.3 $ 1,255.4 $ 1,123.7