Business Segment Information - Segment Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Net Sales	$ 3,817,477	$ 3,749,591	$ 3,370,673	$ 3,364,651	$ 3,496,238	$ 3,119,139	$ 2,670,804	$ 2,743,131	$ 14,302,392	$ 12,029,312	$ 11,360,753
Segment Operating Income									2,239,179	1,790,255	1,575,655
Corporate administration									200,901	172,632	173,203
Income before interest expense and other expense									2,038,278	1,617,623	1,402,452
Interest expense									213,873	162,436	136,517
Other expense									122,128	126,546	151,207
Income before income taxes									1,702,277	1,328,641	1,114,728
Assets	15,320,087				15,489,904				15,320,087	15,489,904	12,034,142
Property Additions									247,667	203,748	149,407
Depreciation									237,806	202,868	190,308
Long-Lived Assets	1,856,237				1,937,292				1,856,237	1,937,292	1,568,100
Corporate
Segment Reporting Information [Line Items]
Assets	504,723				710,216				504,723	710,216	1,874,894
Property Additions									35,973	38,054	3,932
Depreciation									9,421	8,561	8,825
Diversified Industrial | Operating Segments
Segment Reporting Information [Line Items]
Assets	13,368,619				13,366,981				13,368,619	13,366,981	8,728,671
Property Additions									196,469	148,765	134,618
Depreciation									211,648	176,823	163,014
Aerospace Systems
Segment Reporting Information [Line Items]
Net Sales									2,315,699	2,284,727	2,260,270
Segment Operating Income									397,970	337,496	337,531
Aerospace Systems | Operating Segments
Segment Reporting Information [Line Items]
Assets	1,446,745				1,412,707				1,446,745	1,412,707	1,430,577
Property Additions									15,225	16,929	10,857
Depreciation									16,737	17,484	18,469
North America
Segment Reporting Information [Line Items]
Net Sales									8,978,490	7,585,689	7,144,481
Long-Lived Assets	1,103,308				1,145,127				1,103,308	1,145,127	817,872
North America | Diversified Industrial
Segment Reporting Information [Line Items]
Net Sales									6,726,900	5,366,809	4,955,211
Segment Operating Income									1,076,021	873,552	789,667
International
Segment Reporting Information [Line Items]
Net Sales									5,323,902	4,443,623	4,216,272
Long-Lived Assets	$ 752,929				$ 792,165				752,929	792,165	750,228
International | Diversified Industrial
Segment Reporting Information [Line Items]
Net Sales									5,259,793	4,377,776	4,145,272
Segment Operating Income									$ 765,188	$ 579,207	$ 448,457