Commitments and Contingent Liabilities (Tables)

3 Months Ended

Mar. 31, 2018

Power [Member]

Loss Contingencies [Line Items]

Face Value Of Outstanding Guarantees, Current Exposure And Margin Positions

The following table shows the face value of Power’s outstanding guarantees, current exposure and margin positions as of March 31, 2018 and December 31, 2017.

	As of			As of
	March 31, 2018			December 31, 2017
	Millions
Face Value of Outstanding Guarantees	$	1,755		$	1,701
Exposure under Current Guarantees	$	161		$	153
Letters of Credit Margin Posted	$	109		$	103
Letters of Credit Margin Received	$	18		$	32
Cash Deposited and Received:
Counterparty Cash Margin Deposited	$	—		$	—
Counterparty Cash Margin Received	$	(1	)	$	(1	)
Net Broker Balance Deposited (Received)	$	122		$	147
Additional Amounts Posted:
Other Letters of Credit	$	61		$	61

Total Minimum Purchase Commitments

As of March 31, 2018, the total minimum purchase requirements included in these commitments were as follows:

Fuel Type	Power's Share of Commitments through 2022
	Millions
Nuclear Fuel
Uranium	$	242
Enrichment	$	346
Fabrication	$	170
Natural Gas	$	1,024
Coal	$	286

PSE And G [Member]

Loss Contingencies [Line Items]

Contract For Anticipated BGS-Fixed Price Eligible Load

The contract prices in dollars per MWh for the BGS-RSCP supply, as well as the approximate load, are as follows:

	Auction Year
	2015	2016	2017	2018
36-Month Terms Ending	May 2018	May 2019	May 2020	May 2021	(A)
Load (MW)	2,900	2,800	2,800	2,900
$ per MWh	$99.54	$96.38	$90.78	$91.77

(A) Prices set in the 2018 BGS auction year will become effective on June 1, 2018 when the 2015 BGS auction agreements expire.