The following summarizes our principal contractual commitments, excluding open orders for purchases that support normal operations, as of June 30, 2017 (in millions):



	Six Months Ended December 31,		Year Ended December 31,
	2017		2018		2019		2020		2021		Thereafter		Total
Debt principal and interest	$	1,195	$	327	$	1,571	$	467	$	1,247	$	7,911	$	12,718
Capital lease obligations, including interest (1)	2,677		4,492		3,119		1,122		397		392		12,199
Finance lease obligations, including interest (2)	132		287		294		298		306		2,474		3,791
Operating leases	778		1,463		1,391		1,257		1,099		4,650		10,638
Unconditional purchase obligations (3)	267		634		436		190		76		20		1,623
Other commitments (4) (5)	769		1,190		818		664		511		4,254		8,206
Total commitments	$	5,818	$	8,393	$	7,629	$	3,998	$	3,636	$	19,701	$	49,175

___________________


(1)	Excluding interest, current capital lease obligations of $4.0 billion and $4.9 billion are recorded within “Accrued expenses and other” as of December 31, 2016, and June 30, 2017, and $5.1 billion and $6.9 billion are recorded within “Other long-term liabilities” as of December 31, 2016, and June 30, 2017.


(2)	Excluding interest, current finance lease obligations of $144 million and $173 million are recorded within “Accrued expenses and other” as of December 31, 2016, and June 30, 2017, and $2.4 billion and $2.9 billion are recorded within “Other long-term liabilities” as of December 31, 2016, and June 30, 2017.

(3)

Includes unconditional purchase obligations related to long-term agreements to acquire and license digital media content that are not reflected on the consolidated balance sheets. For those agreements with variable terms, we do not estimate the total obligation beyond any minimum quantities and/or pricing as of the reporting date. Purchase obligations associated with renewal provisions solely at the option of the content provider are included to the extent such commitments are fixed or a minimum amount is specified.


(4)	Includes the estimated timing and amounts of payments for rent and tenant improvements associated with build-to-suit lease arrangements and equipment lease arrangements that have not been placed in service and digital media content liabilities associated with long-term digital media content assets with initial terms greater than one year.


(5)	Excludes $1.9 billion of accrued tax contingencies for which we cannot make a reasonably reliable estimate of the amount and period of payment, if any.