Business Segment Information - Segment Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Net Sales	$ 3,681,467	$ 3,687,518	$ 3,472,045	$ 3,479,294	$ 3,817,477	$ 3,749,591	$ 3,370,673	$ 3,364,651	$ 14,320,324	$ 14,302,392	$ 12,029,312
Segment Operating Income									2,431,233	2,239,179	1,790,255
Corporate administration									194,994	200,901	172,632
Income before interest expense and other expense									2,236,239	2,038,278	1,617,623
Interest expense									190,138	213,873	162,436
Other expense									112,676	122,128	126,546
Income before income taxes									1,933,425	1,702,277	1,328,641
Assets	17,576,690				15,320,087				17,576,690	15,320,087	15,489,904
Property Additions									195,089	247,667	203,748
Depreciation									225,675	237,806	202,868
Long-Lived Assets	1,768,287				1,856,237				1,768,287	1,856,237	1,937,292
Corporate
Segment Reporting Information [Line Items]
Assets	2,841,433				504,723				2,841,433	504,723	710,216
Property Additions									1,993	35,973	38,054
Depreciation									6,263	9,421	8,561
Diversified Industrial
Segment Reporting Information [Line Items]
Net Sales									11,809,547
Diversified Industrial | Operating Segments
Segment Reporting Information [Line Items]
Assets	13,189,204				13,368,619				13,189,204	13,368,619	13,366,981
Property Additions									172,348	196,469	148,765
Depreciation									203,144	211,648	176,823
Aerospace Systems
Segment Reporting Information [Line Items]
Net Sales									2,510,777	2,315,699	2,284,727
Segment Operating Income									487,757	397,970	337,496
Aerospace Systems | Operating Segments
Segment Reporting Information [Line Items]
Assets	1,546,053				1,446,745				1,546,053	1,446,745	1,412,707
Property Additions									20,748	15,225	16,929
Depreciation									16,268	16,737	17,484
North America
Segment Reporting Information [Line Items]
Net Sales									9,318,195	8,978,490	7,585,689
Long-Lived Assets	1,052,263				1,103,308				1,052,263	1,103,308	1,145,127
North America | Diversified Industrial
Segment Reporting Information [Line Items]
Net Sales									6,808,948	6,726,900	5,366,809
Segment Operating Income									1,138,586	1,076,021	873,552
International
Segment Reporting Information [Line Items]
Net Sales									5,002,129	5,323,902	4,443,623
Long-Lived Assets	$ 716,024				$ 752,929				716,024	752,929	792,165
International | Diversified Industrial
Segment Reporting Information [Line Items]
Net Sales									5,000,599	5,259,793	4,377,776
Segment Operating Income									$ 804,890	$ 765,188	$ 579,207