Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

Cash Equivalents

The cash equivalents were as follows:

	Edison International				SCE
(in millions)	September 30, 2017		December 31, 2016		September 30, 2017		December 31, 2016
Money market funds	$	49	$	41	$	25	$	18

Cash is temporarily invested until required for check clearing. Checks issued, but not yet paid by the financial institution, are reclassified from cash to accounts payable at the end of each reporting period as follows:

	Edison International				SCE
(in millions)	September 30, 2017		December 31, 2016		September 30, 2017		December 31, 2016
Book balances reclassified to accounts payable	$	85	$	138	$	85	$	136

EPS Attributable to Edison International Common Shareholders

EPS attributable to Edison International common shareholders was computed as follows:

	Three months ended September 30,				Nine months ended September 30,
(in millions, except per-share amounts)	2017		2016		2017		2016
Basic earnings per share – continuing operations:
Income from continuing operations attributable to common shareholders	$	470	$	421	$	1,110	$	983
Participating securities dividends	—		—		—		—
Income from continuing operations available to common shareholders	$	470	$	421	$	1,110	$	983
Weighted average common shares outstanding	326		326		326		326
Basic earnings per share – continuing operations	$	1.44	$	1.29	$	3.41	$	3.01
Diluted earnings per share – continuing operations:
Income from continuing operations attributable to common shareholders	$	470	$	421	$	1,110	$	983
Participating securities dividends	—		—		—		—
Income from continuing operations available to common shareholders	$	470	$	421	$	1,110	$	983
Income impact of assumed conversions	—		—		—		—
Income from continuing operations available to common shareholders and assumed conversions	$	470	$	421	$	1,110	$	983
Weighted average common shares outstanding	326		326		326		326
Incremental shares from assumed conversions	2		4		3		4
Adjusted weighted average shares – diluted	328		330		329		330
Diluted earnings per share – continuing operations	$	1.43	$	1.27	$	3.38	$	2.98