Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Power Plant and Land and Other Operating Leases

The total contractual future minimum lease rentals for our contracts accounted for as operating leases at December 31, 2018, are as follows (in millions):

2019	$	342
2020	261
2021	257
2022	224
2023	141
Thereafter	239
Total	$	1,464

Future minimum rent payments under these lease agreements, including renewal options and rent escalation clauses, are as follows (in millions):

	Initial Year	2019		2020		2021		2022		2023		Thereafter		Total
Land and other operating leases	various	$	13	$	13	$	12	$	10	$	10	$	174	$	232
Power plant operating lease	2000	31		—		—		—		—		—		31
Total leases		$	44	$	13	$	12	$	10	$	10	$	174	$	263

Schedule of Future Minimum Lease Payments for Office and Equipment Leases

Future minimum lease payments under these leases are as follows (in millions):

2019	$	6
2020	6
2021	8
2022	8
2023	7
Thereafter	18
Total	$	53

Schedule Of Future Minimum Payments For Commodities

At December 31, 2018, we had future commitments for the purchase, transportation, or storage of commodities as detailed below (in millions):

2019	$	415
2020	172
2021	134
2022	101
2023	93
Thereafter	201
Total	$	1,116

Schedule of Guarantor Obligations

At December 31, 2018, guarantees of subsidiary debt, standby letters of credit and surety bonds to third parties and the guarantee under our Account Receivable Sales Program and their respective expiration dates were as follows (in millions):

Guarantee Commitments	2019		2020		2021		2022		2023		Thereafter		Total
Guarantee of subsidiary debt(1)	$	30	$	30	$	29	$	24	$	14	$	52	$	179
Standby letters of credit(2)(3)(4)	1,321		6		—		—		38		—		1,365
Surety bonds(4)(5)(6)	12		7		—		—		—		76		95
Guarantee under Accounts Receivable Sales Program(7)	238		—		—		—		—		—		238
Total	$	1,601	$	43	$	29	$	24	$	52	$	128	$	1,877

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(1) Represents Calpine Corporation guarantees of certain power plant capital leases and related interest. All guaranteed capital leases are recorded on our Consolidated Balance Sheets.

(2) The standby letters of credit disclosed above represent those disclosed in Note 8.

(3) Letters of credit are renewed annually and as such all amounts are reflected in the year of letter of credit expiration. The related commercial obligations extend for multiple years, therefore, renewal of the letter of credit will likely follow the term of the associated commercial obligation.

(4) These are contingent off balance sheet obligations.

(5) The majority of surety bonds do not have expiration or cancellation dates.

(6) As of December 31, 2018, no cash collateral is outstanding related to these bonds.

(7) Calpine has guaranteed the performance of Calpine Solutions under the Accounts Receivable Sales Program. The Accounts Receivable Sales Program expires on November 29, 2019.