As of August 31, 2015, our purchase commitments under various contracts for the remainder of 2016 and annually thereafter were as follows (in millions):

		Aircraft and
		Aircraft-Related		Other⁽¹⁾		Total

2016 (remainder)		$	657	$	815	$	1,472
2017			1,240		264		1,504
2018			1,739		149		1,888
2019			1,584		71		1,655
2020			1,638		23		1,661
Thereafter			5,962		98		6,060
Total		$	12,820	$	1,420	$	14,240

⁽¹⁾	Primarily equipment, advertising contracts and, for the remainder of 2016, $495 million of estimated required quarterly contributions to our U.S. Pension Plans.

The amounts reflected in the table above for purchase commitments represent noncancelable agreements to purchase goods or services. As of August 31, 2015, our obligation to purchase six Boeing 767-300 Freighter (“B767F”) aircraft and nine Boeing 777 Freighter (“B777F”) aircraft is conditioned upon there being no event that causes FedEx Express or its employees not to be covered by the Railway Labor Act of 1926, as amended. Open purchase orders that are cancelable are not considered unconditional purchase obligations for financial reporting purposes and are not included in the table above.

On July 21, 2015, FedEx Express entered into a supplemental agreement to purchase 50 additional B767F aircraft from Boeing. Four of the 50 additional B767F aircraft purchases are conditioned upon there being no event that causes FedEx Express or its employees not to be covered by the Railway Labor Act of 1926, as amended. The 50 additional B767F aircraft are expected to be delivered from fiscal 2018 through fiscal 2023 and will enable FedEx Express to continue to improve the efficiency and reliability of its aircraft fleet.

We had $411 million in deposits and progress payments as of August 31, 2015 on aircraft purchases and other planned aircraft-related transactions. These deposits are classified in the “Other assets” caption of our consolidated balance sheets. Aircraft and aircraft-related contracts are subject to price escalations. The following table is a summary of the key aircraft we are committed to purchase as of August 31, 2015 with the year of expected delivery:

	B767F	B777F	Total

2016 (remainder)	6	1	7
2017	12	-	12
2018	16	2	18
2019	13	2	15
2020	12	3	15
Thereafter	26	9	35
Total	85	17	102

A summary of future minimum lease payments under noncancelable operating leases with an initial or remaining term in excess of one year at August 31, 2015 is as follows (in millions):

	Operating Leases
	Aircraft				Total
	and Related		Facilities		Operating
	Equipment		and Other		Leases

2016 (remainder)	$	430	$	1,256	$	1,686
2017		403		1,890		2,293
2018		332		1,472		1,804
2019		274		1,286		1,560
2020		190		1,126		1,316
Thereafter		360		7,354		7,714
Total	$	1,989	$	14,384	$	16,373

Future minimum lease payments under capital leases were immaterial at August 31, 2015. While certain of our lease agreements contain covenants governing the use of the leased assets or require us to maintain certain levels of insurance, none of our lease agreements include material financial covenants or limitations.