v3.26.1
Segment Information - Schedule of Financial Information by Segment (Details) - USD ($)
$ in Millions
 12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2024
Revenues:      
Total revenues $ 11,154.0 $ 10,791.0 $ 10,859.0
Cost of revenues:      
Staff costs (2,308.0) (2,159.0) (2,162.0)
Depreciation (2,135.0) (2,094.0) (1,893.0)
Other segment items (3,162.0) (2,848.0) (2,757.0)
Adjusted segment operating profit 3,167.0 3,304.0 3,411.0
Reconciliation of Adjusted Segment Operating Profit to income before provision for income taxes:      
Central costs (866.0) (695.0) (768.0)
Interest expense, net (387.0) (425.0) (428.0)
Amortization of acquired intangibles (113.0) (114.0) (121.0)
Income before provision for income taxes 1,801.0 2,070.0 2,094.0
Capital expenditures 2,455.0 2,460.0 4,665.0
Total assets 22,268.0 21,970.0  
Segment assets      
Reconciliation of Adjusted Segment Operating Profit to income before provision for income taxes:      
Total assets 15,085.0 14,904.0  
Corporate      
Reconciliation of Adjusted Segment Operating Profit to income before provision for income taxes:      
Total assets 7,183.0 7,066.0  
General Tool      
Revenues:      
Total revenues 6,507.0 6,397.0 6,721.0
Cost of revenues:      
Staff costs (1,325.0) (1,224.0) (1,199.0)
Depreciation (1,415.0) (1,384.0) (1,259.0)
Other segment items (1,562.0) (1,416.0) (1,339.0)
Adjusted segment operating profit 1,932.0 2,093.0 2,394.0
Reconciliation of Adjusted Segment Operating Profit to income before provision for income taxes:      
Capital expenditures 1,579.0 1,736.0 3,219.0
General Tool | Segment assets      
Reconciliation of Adjusted Segment Operating Profit to income before provision for income taxes:      
Total assets 10,141.0 10,083.0  
Specialty      
Revenues:      
Total revenues 3,715.0 3,487.0 3,250.0
Cost of revenues:      
Staff costs (716.0) (677.0) (696.0)
Depreciation (545.0) (539.0) (470.0)
Other segment items (1,207.0) (1,060.0) (1,054.0)
Adjusted segment operating profit 1,176.0 1,138.0 964.0
Reconciliation of Adjusted Segment Operating Profit to income before provision for income taxes:      
Capital expenditures 718.0 537.0 1,180.0
Specialty | Segment assets      
Reconciliation of Adjusted Segment Operating Profit to income before provision for income taxes:      
Total assets 3,813.0 3,623.0  
United Kingdom      
Revenues:      
Total revenues 932.0 907.0 888.0
Cost of revenues:      
Staff costs (267.0) (258.0) (267.0)
Depreciation (175.0) (171.0) (164.0)
Other segment items (393.0) (372.0) (364.0)
Adjusted segment operating profit 59.0 73.0 53.0
Reconciliation of Adjusted Segment Operating Profit to income before provision for income taxes:      
Capital expenditures 158.0 187.0 266.0
United Kingdom | Segment assets      
Reconciliation of Adjusted Segment Operating Profit to income before provision for income taxes:      
Total assets 1,131.0 1,198.0  
Equipment rentals      
Revenues:      
Total revenues 10,320.0 9,980.0 9,630.0
Equipment rentals | General Tool      
Revenues:      
Total revenues 6,013.0 5,889.0 5,826.0
Equipment rentals | Specialty      
Revenues:      
Total revenues 3,505.0 3,313.0 3,062.0
Equipment rentals | United Kingdom      
Revenues:      
Total revenues 802.0 778.0 742.0
Sales of rental equipment      
Revenues:      
Total revenues 451.0 467.0 859.0
Cost of revenues:      
Cost of rental equipment sales (382.0) (386.0) (636.0)
Sales of rental equipment | General Tool      
Revenues:      
Total revenues 324.0 338.0 721.0
Cost of revenues:      
Cost of rental equipment sales (273.0) (280.0) (530.0)
Sales of rental equipment | Specialty      
Revenues:      
Total revenues 77.0 79.0 73.0
Cost of revenues:      
Cost of rental equipment sales (71.0) (73.0) (66.0)
Sales of rental equipment | United Kingdom      
Revenues:      
Total revenues 50.0 50.0 65.0
Cost of revenues:      
Cost of rental equipment sales (38.0) (33.0) (40.0)
Sales of new equipment, merchandise and consumables      
Revenues:      
Total revenues 383.0 344.0 370.0
Sales of new equipment, merchandise and consumables | General Tool      
Revenues:      
Total revenues 170.0 170.0 174.0
Sales of new equipment, merchandise and consumables | Specialty      
Revenues:      
Total revenues 133.0 95.0 115.0
Sales of new equipment, merchandise and consumables | United Kingdom      
Revenues:      
Total revenues $ 80.0 $ 79.0 $ 81.0