Commitments and Contingent Liabilities (Tables)

9 Months Ended

Sep. 30, 2016

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 September 30, 2016 and December 31, 2015.

	As of			As of
	September 30, 2016			December 31, 2015
	Millions
Face Value of Outstanding Guarantees	$	1,797		$	1,734
Exposure under Current Guarantees	$	143		$	172
Letters of Credit Margin Posted	$	164		$	122
Letters of Credit Margin Received	$	136		$	192
Cash Deposited and Received:
Counterparty Cash Margin Deposited	$	—		$	—
Counterparty Cash Margin Received	$	(4	)	$	(15	)
Net Broker Balance Deposited (Received)	$	(12	)	$	(5	)
Additional Amounts Posted:
Other Letters of Credit	$	51		$	51

Total Minimum Purchase Commitments

As of September 30, 2016, the total minimum purchase requirements included in these commitments were as follows:

Fuel Type	Power's Share of Commitments through 2020
	Millions
Nuclear Fuel
Uranium	$	338
Enrichment	$	307
Fabrication	$	179
Natural Gas	$	904
Coal	$	235

PSE And G [Member]

Loss Contingencies [Line Items]

Contract For Anticipated BGS-Fixed Price Eligible Load

	Auction Year
	2013	2014	2015	2016
36-Month Terms Ending	May 2016	May 2017	May 2018	May 2019	(A)
Load (MW)	2,800	2,800	2,900	2,800
$ per MWh	$92.18	$97.39	$99.54	$96.38

(A) Prices set in the 2016 BGS auction year became effective on June 1, 2016 when the 2013 BGS auction agreements expired.