Business Segment Information (Tables)
 6 Months Ended
Mar. 31, 2015
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Business Segment
IndustrialIndustrialIndustrialIndustrialEnergy-
Gases–Gases–Gases–Gases–Materialsfrom-CorporateSegment
AmericasEMEAAsiaGlobalTechnologiesWasteand otherTotal
Three Months Ended 31 March 2015
Sales$ 890.4 $ 448.8 $ 393.0 $ 67.1 $ 533.3 $ - $ 81.9 $ 2,414.5
Operating income (loss) 182.0 71.0 84.7 (7.9) 124.2 (2.8)(8.8) 442.4
Depreciation and amortization 103.3 47.6 50.3 5.5 23.3 - 3.3 233.3
Equity affiliates' income (loss) 15.1 8.0 9.4 (.2) .7 - - 33.0
Three Months Ended 31 March 2014
Sales$ 1,032.9 $ 542.7 $ 365.7 $ 68.4 $ 499.6 $ - $ 72.6 $ 2,581.9
Operating income (loss) 169.6 87.5 71.2 (14.6) 93.8 (3.5)(19.3) 384.7
Depreciation and amortization 99.4 55.0 48.1 1.6 22.7 - 2.3 229.1
Equity affiliates' income 12.6 9.3 7.6 .3 .6 - - 30.4
Six Months Ended 31 March 2015
Sales$ 1,893.4 $ 949.6 $ 791.7 $ 126.1 $ 1,057.3 $ - $ 157.2 $ 4,975.3
Operating income (loss) 393.2 152.3 175.2 (25.8) 228.8 (5.3)(31.5) 886.9
Depreciation and amortization 206.9 98.7 99.9 9.8 47.3 - 6.2 468.8
Equity affiliates' income 32.3 18.3 24.0 .2 1.3 - - 76.1
Six Months Ended 31 March 2014
Sales$ 1,976.8 $ 1,092.6 $ 761.0 $ 135.6 $ 979.1 $ - $ 182.3 $ 5,127.4
Operating income (loss) 354.1 172.7 153.9 (24.9) 158.1 (6.4)(37.2) 770.3
Depreciation and amortization 203.4 109.9 94.5 3.3 47.2 - 5.0 463.3
Equity affiliates' income 30.2 19.0 17.2 1.0 1.2 - - 68.6
Total Assets
31 March 2015$ 6,074.5 $ 3,131.6 $ 4,174.3 $ 338.8 $ 1,801.2 $ 724.8 $ 1,248.6 $ 17,493.8
30 September 2014 6,240.7 3,521.0 4,045.6 389.4 1,835.7 591.9 1,154.8 17,779.1
Reconciliation of Segment to Consolidated Operating Income [Table Text Block]
Below is a reconciliation of segment total operating income to consolidated operating income:
Three Months EndedSix Months Ended
31 March31 March
Operating Income2015201420152014
Segment total$ 442.4 $ 384.7 $ 886.9 $ 770.3
Business restructuring and cost reduction actions (55.4) - (87.8) -
Pension settlement loss (12.6) - (12.6) -
Gain on previously held equity interest - - 17.9 -
Consolidated Total$ 374.4 $ 384.7 $ 804.4 $ 770.3