Financial instruments (Tables)

9 Months Ended

Mar. 31, 2017

Investments, All Other Investments [Abstract]

Investments Classified by Contractual Maturity Date

The contractual maturities of available-for-sale investments at March 31, 2017 and June 30, 2016 are as follows:

	March 31, 2017				June 30, 2016
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Less than one year	$	325	$	327	$	29,960	$	29,990
One to three years	7,870		7,917		144,100		144,625
Above three years	2,018		2,024		34,276		34,275

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments

The carrying value of long-term debt and estimated fair value of long-term debt are as follows:

	March 31, 2017		June 30, 2016
Carrying value of long-term debt	$	5,327,952	$	2,733,140
Estimated fair value of long-term debt	5,517,317		3,133,989

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The following summarizes the location and fair value of significant derivative financial instruments reported in the Consolidated Balance Sheet as of March 31, 2017 and June 30, 2016:

	Balance Sheet Caption	March 31, 2017		June 30, 2016
Net investment hedges
Cross-currency swap contracts	Other assets	$	30,775	$	24,771
Cash flow hedges
Costless collar contracts	Non-trade and notes receivable	670		—
Costless collar contracts	Other accrued liabilities	5,786		8,368

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance

Gains (losses) on derivative and non-derivative financial instruments that were recorded in accumulated other comprehensive (loss) in the Consolidated Balance Sheet are as follows:

	Three Months Ended						Nine Months Ended
	March 31,						March 31,
	2017			2016			2017			2016
Cross-currency swap contracts	$	(1,278	)	$	10,934		$	3,741		$	3,140
Foreign denominated debt	(11,009		)	(2,131		)	(11,005		)	2,202

Schedule of Financial Assets & Liabilities Measured at Fair Value

A summary of financial assets and liabilities that were measured at fair value on a recurring basis at March 31, 2017 and June 30, 2016 are as follows:

			Quoted Prices		Significant Other		Significant
	Fair		In Active		Observable		Unobservable
	Value at		Markets		Inputs		Inputs
	March 31, 2017		(Level 1)		(Level 2)		(Level 3)
Assets:
Equity securities	$	2,302	$	2,302	$	—	$	—
Corporate bonds	5,587		5,587		—		—
Asset-backed and mortgage-backed securities	4,680		—		4,680		—
Derivatives	34,799		—		34,799		—
Investments measured at net asset value	6,599
Liabilities:
Derivatives	9,600		—		9,600		—

			Quoted Prices		Significant Other		Significant
	Fair		In Active		Observable		Unobservable
	Value at		Markets		Inputs		Inputs
	June 30, 2016		(Level 1)		(Level 2)		(Level 3)
Assets:
Equity securities	$	1,296	$	1,296	$	—	$	—
Government bonds	15,764		15,764		—		—
Corporate bonds	184,380		184,380		—		—
Asset-backed and mortgage-backed securities	8,746		—		8,746		—
Derivatives	25,303		—		25,303		—
Investments measured at net asset value	361,770
Liabilities:
Derivatives	13,028		—		13,028		—