Consolidated Statements of Changes in Equity (Unaudited) - PAC - USD ($) $ in Millions	Total	Accumulated Other Comprehensive (Loss) Income, Net	PAC	PAC Preferred Stock	PAC Common Stock	PAC Additional Paid-in Capital	PAC Retained Earnings	PAC Accumulated Other Comprehensive (Loss) Income, Net
Balance at Dec. 31, 2019			$ 8,437	$ 2	$ 0	$ 4,479	$ 3,972	$ (16)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 1,786		342				342
Other comprehensive income (loss)	(419)	$ (419)	1					1
Balance at Jun. 30, 2020			8,780	2	0	4,479	4,314	(15)
Balance at Mar. 31, 2020			8,614	2	0	4,479	4,148	(15)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,116		166				166
Other comprehensive income (loss)	128	128
Balance at Jun. 30, 2020			8,780	2	0	4,479	4,314	(15)
Balance at Dec. 31, 2020	43,010		9,173	2	0	4,479	4,711	(19)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,285		394				394
Other comprehensive income (loss)	196	192
Balance at Jun. 30, 2021	45,412		9,567	2	0	4,479	5,105	(19)
Balance at Mar. 31, 2021			9,342	2	0	4,479	4,880	(19)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,281		225				225
Other comprehensive income (loss)	84	$ 80
Balance at Jun. 30, 2021	$ 45,412		$ 9,567	$ 2	$ 0	$ 4,479	$ 5,105	$ (19)