| USD ($) $ in Millions, shares in Millions | Jun 30, 2026 | Mar 31, 2026 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Sep 30, 2024 | Jun 30, 2024 | Mar 31, 2024 | Sep 30, 2023 | Jun 30, 2023 | Mar 31, 2023 | Sep 30, 2022 | Jun 30, 2022 | Mar 31, 2022 | Sep 30, 2021 | Jun 30, 2021 | Mar 31, 2021 | Sep 30, 2020 | Jun 30, 2020 | Mar 31, 2020 | Sep 30, 2019 | Jun 30, 2019 | Mar 31, 2019 | Sep 30, 2018 | Jun 30, 2018 | Mar 31, 2018 | Sep 30, 2017 | Jun 30, 2017 | Mar 31, 2017 | Sep 30, 2016 | Jun 30, 2016 | Mar 31, 2016 | Sep 30, 2015 | Jun 30, 2015 | Mar 31, 2015 | Sep 30, 2014 | Jun 30, 2014 | Mar 31, 2014 | Sep 30, 2013 | Jun 30, 2013 | Mar 31, 2013 | Sep 30, 2012 | Jun 30, 2012 | Mar 31, 2012 | Sep 30, 2011 | Jun 30, 2011 | Mar 31, 2011 | Sep 30, 2010 | Jun 30, 2010 | Mar 31, 2010 | Sep 30, 2009 | Jun 30, 2009 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Net sales | $ 8,758.1 | $ 7,620.1 | $ 6,194.4 | $ 5,650.3 | $ 4,811.0 | $ 4,038.8 | $ 3,609.7 | $ 3,256.3 | $ 3,199.2 | $ 3,053.9 | $ 2,974.0 | $ 3,295.2 | ||||||||||||||||||||||||||||||||||||||||
Gross profit | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Cost of sales | 5,210.1 | 4,819.9 | 3,835.1 | 3,597.0 | 3,167.0 | 2,681.9 | 2,396.6 | 2,167.3 | 2,150.7 | 2,062.2 | 2,030.6 | 2,235.2 | ||||||||||||||||||||||||||||||||||||||||
Gross profit | 3,548.0 | 2,800.2 | 2,359.3 | 2,053.3 | 1,644.0 | 1,356.9 | 1,213.1 | 1,089.0 | 1,048.5 | 991.7 | 943.4 | 1,060.0 | ||||||||||||||||||||||||||||||||||||||||
Acquisition-related expenses | 23.5 | 116.9 | 0.0 | 12.0 | 44.0 | 45.4 | 70.0 | 0.0 | 9.0 | 4.0 | 5.4 | 12.0 | ||||||||||||||||||||||||||||||||||||||||
Casualty loss related to flood (Note 15) | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||||||||||||
Change in contingent acquisition related obligations (Note 15) | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||||||||||||
Selling, general and administrative expenses | 939.9 | 851.5 | 657.0 | 622.5 | 575.2 | 492.0 | 444.3 | 404.2 | 381.6 | 367.8 | 346.3 | 366.9 | ||||||||||||||||||||||||||||||||||||||||
Operating income | 2,584.6 | 1,831.8 | 1,702.3 | 1,418.8 | 1,024.8 | 819.5 | 698.8 | 684.8 | 657.9 | 619.9 | 591.7 | 681.1 | ||||||||||||||||||||||||||||||||||||||||
Interest expense | (213.7) | (207.9) | (80.7) | (80.9) | (76.5) | (55.7) | (56.3) | (38.1) | (33.6) | (35.0) | (35.9) | (32.8) | ||||||||||||||||||||||||||||||||||||||||
Gain on bargain purchase acquisition | - | - | - | - | - | 0.0 | 0.0 | - | 0.0 | 5.4 | - | - | ||||||||||||||||||||||||||||||||||||||||
Loss on early extinguishment of debt | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||||||||||||
Other income (expense), net | 17.5 | 21.8 | 19.3 | 10.2 | 14.6 | 11.2 | 21.3 | 16.0 | 9.2 | 5.6 | 4.1 | 2.6 | ||||||||||||||||||||||||||||||||||||||||
Income before income taxes | 2,388.4 | 1,645.7 | 1,640.9 | 1,348.1 | 962.9 | 775.0 | 663.8 | 662.7 | 633.5 | 595.9 | 559.9 | 650.9 | ||||||||||||||||||||||||||||||||||||||||
Provision for income taxes | (604.3) | (702.4) | (385.8) | (247.3) | (218.7) | (166.1) | (135.1) | (110.7) | (115.2) | (130.6) | (117.2) | (150.4) | ||||||||||||||||||||||||||||||||||||||||
Net income | 1,784.1 | 943.3 | 1,255.1 | 1,100.8 | 744.2 | 608.9 | 528.7 | 552.0 | 518.3 | 465.3 | 442.7 | - | ||||||||||||||||||||||||||||||||||||||||
Less: Net income attributable to noncontrolling interests | (14.9) | (10.3) | (9.4) | (9.5) | (6.4) | (4.5) | (3.9) | (3.3) | (4.4) | (4.8) | (3.5) | - | ||||||||||||||||||||||||||||||||||||||||
Net income from continuing operations | - | - | - | - | - | - | - | - | - | - | - | 500.5 | ||||||||||||||||||||||||||||||||||||||||
Less: Net income from continuing operations attributable to noncontrolling interests | - | - | - | - | - | - | - | - | - | - | - | (3.9) | ||||||||||||||||||||||||||||||||||||||||
Net income from continuing operations attributable to Amphenol Corporation | - | - | - | - | - | - | - | - | - | - | - | 496.6 | ||||||||||||||||||||||||||||||||||||||||
Income from discontinued operations attributable to Amphenol Corporation, net of income taxes of ($1.5) and ($1.8) for 2021, respectively | - | - | - | - | - | - | - | - | - | - | - | 0.0 | ||||||||||||||||||||||||||||||||||||||||
Net income attributable to Amphenol Corporation | $ 1,769.2 | $ 933.0 | $ 1,245.7 | $ 1,091.3 | $ 737.8 | $ 604.4 | $ 524.8 | $ 548.7 | $ 513.9 | $ 460.5 | $ 439.2 | $ 496.6 | ||||||||||||||||||||||||||||||||||||||||
Net income per common share attributable to Amphenol Corporation - Basic, Continuing operations (in dollars per share) | - | - | - | - | - | - | - | - | - | - | - | $ 0.83 | ||||||||||||||||||||||||||||||||||||||||
Net income per common share attributable to Amphenol Corporation - Basic, Discontinued operations, net of income taxes (in dollars per share) | - | - | - | - | - | - | - | - | - | - | - | 0.00 | ||||||||||||||||||||||||||||||||||||||||
Net income attributable to Amphenol Corporation per common share - Basic (in dollars per share) | 1.44 | 0.76 | 1.02 | 0.90 | 0.61 | 0.50 | 0.44 | 0.91 | 0.86 | 0.77 | 0.74 | 0.83 | ||||||||||||||||||||||||||||||||||||||||
Weighted average common shares outstanding - Basic (in shares) | 1,230.4 | 1,228.9 | 1,221.8 | 1,215.3 | 1,209.8 | 1,204.9 | 1,202.3 | 600.0 | 597.7 | 595.0 | 595.1 | 595.3 | ||||||||||||||||||||||||||||||||||||||||
Net income per common share attributable to Amphenol Corporation - Diluted, Continuing operations (in dollars per share) | - | - | - | - | - | - | - | - | - | - | - | 0.80 | ||||||||||||||||||||||||||||||||||||||||
Net income per common share attributable to Amphenol Corporation - Diluted, Discontinued operations, net of income taxes (in dollars per share) | - | - | - | - | - | - | - | - | - | - | - | 0.00 | ||||||||||||||||||||||||||||||||||||||||
Net income attributable to Amphenol Corporation per common share - Diluted (in dollars per share) | 1.37 | 0.72 | 0.97 | 0.86 | 0.58 | 0.48 | 0.41 | 0.87 | 0.83 | 0.74 | 0.71 | 0.80 | ||||||||||||||||||||||||||||||||||||||||
Weighted average common shares outstanding - Diluted (in shares) | 1,289.2 | 1,289.7 | 1,282.8 | 1,272.2 | 1,266.2 | 1,265.5 | 1,264.9 | 627.9 | 622.0 | 618.2 | 619.9 | 619.3 | ||||||||||||||||||||||||||||||||||||||||
Dividends declared per share (in dollars per share) | - | - | - | - | - | - | - | - | - | - | - | - |