Revenue Recognition Revenue by geographic region (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
Disaggregation of Revenue [Line Items]
Revenues from contracts	$ 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
North America
Disaggregation of Revenue [Line Items]
Revenues from contracts									9,318,195	$ 8,978,490	$ 7,585,689
Europe
Disaggregation of Revenue [Line Items]
Revenues from contracts									2,968,971
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues from contracts									1,855,831
Latin America
Disaggregation of Revenue [Line Items]
Revenues from contracts									$ 177,327