Consolidated Statements of Changes in Equity - PAC - USD ($) $ in Millions	Total	Accumulated Other Comprehensive Income (Loss)	PAC	PAC Preferred Stock	PAC Common Stock	PAC Additional Paid-in Capital	PAC Retained Earnings	PAC Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2018			$ 7,845	$ 2	$ 0	$ 4,479	$ 3,377	$ (13)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to parent	$ 2,950		771				771
Other comprehensive income	239	$ 239	(4)				(1)	(3)
Dividends declared			(175)				(175)
Balance at Dec. 31, 2019			8,437	2	0	4,479	3,972	(16)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to parent	6,943		739				739
Other comprehensive income	154	154	(3)					(3)
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 attributable to parent	5,790		888				888
Other comprehensive income	217	$ 212	2					2
Dividends declared			(150)				(150)
Balance at Dec. 31, 2021	$ 46,694		$ 9,913	$ 2	$ 0	$ 4,479	$ 5,449	$ (17)