| USD ($) $ 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 | Sep 30, 2017 |
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Operations | |||||||||||||||||||||||||
Operations [Abstract] | |||||||||||||||||||||||||
Statement of Cash Flows [Abstract] | |||||||||||||||||||||||||
Net income - Linde plc | $ 1,928 | $ 1,857 | $ 1,929 | $ 1,766 | $ 1,673 | $ 1,550 | $ 1,663 | $ 1,627 | $ 1,565 | $ 1,575 | $ 1,516 | $ 1,273 | |||||||||||||
Add: Noncontrolling interests | 44 | 43 | 43 | 40 | 34 | 53 | 37 | 38 | 36 | 37 | 36 | 27 | |||||||||||||
Less: Income from discontinued operations, net of tax and noncontrolling interests | - | - | - | - | - | - | - | - | - | - | - | 0 | |||||||||||||
Net Income (including noncontrolling interests) | 1,972 | 1,900 | 1,972 | 1,806 | 1,707 | 1,603 | 1,700 | 1,665 | 1,601 | 1,612 | 1,552 | 1,300 | |||||||||||||
Adjustments to reconcile net income to net cash provided by operating activities: | |||||||||||||||||||||||||
Cost reduction program and other charges | (32) | (44) | (57) | (32) | 18 | 127 | (20) | (55) | (30) | - | (61) | (13) | |||||||||||||
Amortization of merger-related inventory step-up | - | - | - | - | - | - | - | - | - | - | - | - | |||||||||||||
Depreciation and amortization | 963 | 951 | 961 | 942 | 910 | 960 | 958 | 949 | 959 | 960 | 948 | 1,045 | |||||||||||||
Deferred income taxes | (20) | 8 | (445) | (22) | 9 | (124) | (149) | (35) | (111) | (65) | 4 | (191) | |||||||||||||
Share-based compensation | 19 | 41 | 45 | 46 | 42 | 42 | 40 | 38 | 36 | 36 | 30 | 27 | |||||||||||||
Working capital: | |||||||||||||||||||||||||
Accounts receivable | (290) | (361) | (70) | (79) | (230) | 224 | (61) | (361) | 6 | (44) | (131) | (29) | |||||||||||||
Inventory | (41) | (48) | (1) | (45) | 9 | 55 | 4 | (27) | (40) | (26) | (59) | (156) | |||||||||||||
Prepaid and other current assets | - | (52) | 77 | (107) | 26 | - | (12) | (50) | 70 | (34) | (5) | 12 | |||||||||||||
Payables and accruals | 56 | 35 | 434 | (290) | (209) | 15 | (328) | (65) | 190 | (394) | (64) | 306 | |||||||||||||
Contract assets and liabilities, net | (180) | (108) | 46 | 43 | (65) | (121) | (139) | (50) | (121) | 183 | (66) | 126 | |||||||||||||
Pension contributions | (11) | (7) | (5) | (10) | (5) | (5) | (13) | (11) | (10) | (15) | (10) | (25) | |||||||||||||
Long-term assets, liabilities and other | (165) | (75) | (9) | (41) | (51) | (45) | (51) | (44) | (30) | (63) | (230) | 234 | |||||||||||||
Net cash provided by (used for) operating activities | 2,271 | 2,240 | 2,948 | 2,211 | 2,161 | 2,731 | 1,929 | 1,954 | 2,520 | 2,150 | 1,908 | 2,636 | |||||||||||||
Investing | |||||||||||||||||||||||||
Capital expenditures | (1,438) | (1,342) | (1,276) | (1,257) | (1,270) | (1,066) | (1,133) | (1,048) | (948) | (859) | (829) | (762) | |||||||||||||
Acquisitions, net of cash acquired | (232) | (153) | (123) | (158) | (112) | (23) | (152) | 0 | (8) | (26) | (808) | (61) | |||||||||||||
Divestitures, net of cash divested and asset sales | 11 | 112 | 7 | 11 | 13 | 132 | 15 | 7 | 10 | 21 | 3 | 123 | |||||||||||||
Other investing, net | 1 | (1) | (42) | (53) | - | - | - | - | - | - | - | - | |||||||||||||
Net cash provided by (used for) investing activities | (1,658) | (1,384) | (1,434) | (1,457) | (1,369) | (957) | (1,270) | (1,041) | (946) | (864) | (1,634) | (700) | |||||||||||||
Financing | |||||||||||||||||||||||||
Short-term debt borrowings (repayments) - net | 49 | 339 | 82 | 260 | 165 | 101 | (705) | (631) | 871 | (2,315) | 1,199 | 57 | |||||||||||||
Long-term debt borrowings | 1,958 | 58 | 5 | 719 | 2,340 | 8 | 2,372 | 2,456 | 8 | 2,055 | 60 | - | |||||||||||||
Long-term debt repayments | (26) | (733) | (9) | (633) | (1,012) | (16) | (347) | (610) | (10) | (1,099) | (542) | (22) | |||||||||||||
Issuances of ordinary shares | 19 | 3 | 5 | 4 | 11 | 7 | 5 | 16 | 4 | 8 | 13 | 2 | |||||||||||||
Purchases of ordinary shares | (871) | (807) | (989) | (1,111) | (1,111) | (667) | (1,440) | (1,041) | (1,158) | (908) | (859) | (1,149) | |||||||||||||
Cash dividends - Linde plc shareholders | (738) | (741) | (701) | (704) | (708) | (662) | (665) | (669) | (620) | (623) | (623) | (581) | |||||||||||||
Noncontrolling interest transactions and other | (70) | (87) | (175) | 99 | (73) | (44) | (28) | (189) | (59) | (10) | (12) | (27) | |||||||||||||
Net cash provided by (used for) financing activities | 321 | (1,968) | (1,782) | (1,366) | (388) | (1,273) | (808) | (668) | (964) | (2,892) | (764) | (1,720) | |||||||||||||
Discontinued Operations | |||||||||||||||||||||||||
Cash provided by operating activities | - | - | - | - | - | - | - | - | - | - | - | - | |||||||||||||
Cash used for investing activities | - | - | - | - | - | - | - | - | - | - | - | - | |||||||||||||
Cash provided by financing activities | - | - | - | - | - | - | - | - | - | - | - | - | |||||||||||||
Net cash provided by discontinued operations | - | - | - | - | - | - | - | - | - | - | - | - | |||||||||||||
Effect of exchange rate changes on cash and cash equivalents | 5 | 15 | (9) | 104 | 40 | 60 | (73) | (61) | (73) | 1 | 16 | (115) | |||||||||||||
Change in cash and cash equivalents | $ 939 | $ (1,097) | $ (277) | $ (508) | $ 444 | $ 561 | $ (222) | $ 184 | $ 537 | $ (1,605) | $ (474) | $ 101 |