The following summarizes our principal contractual commitments, excluding open orders for purchases that support normal operations, as of March 31, 2016 (in millions):



	Nine Months Ended December 31,		Year Ended December 31,
	2016		2017		2018		2019		2020		Thereafter		Total
Debt principal and interest	$	367	$	1,322	$	310	$	1,272	$	246	$	9,157	$	12,674
Capital lease obligations, including interest (1)	2,519		2,833		1,577		425		185		93		7,632
Finance lease obligations, including interest (2)	130		173		177		180		183		1,563		2,406
Operating leases	1,030		982		872		769		687		2,599		6,939
Unconditional purchase obligations (3)	483		597		445		200		72		28		1,825
Other commitments (4) (5)	820		418		283		216		176		1,583		3,496
Total commitments	$	5,349	$	6,325	$	3,664	$	3,062	$	1,549	$	15,023	$	34,972

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(1)	Excluding interest, current capital lease obligations of $3.2 billion and $3.0 billion are recorded within “Accrued expenses and other” as of March 31, 2016, and December 31, 2015, and $4.2 billion are recorded within “Other long-term liabilities” as of March 31, 2016, and December 31, 2015.


(2)	Excluding interest, current finance lease obligations of $103 million and $99 million are recorded within “Accrued expenses and other” as of March 31, 2016, and December 31, 2015, and $1.8 billion and $1.7 billion are recorded within “Other long-term liabilities” as of March 31, 2016, and December 31, 2015.

(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 $1.3 billion of tax contingencies for which we cannot make a reasonably reliable estimate of the amount and period of payment, if any.