Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Total	Member's Equity	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2015			$ 48
Cash distributions	$ (1,750)
Comprehensive income (loss), net of tax	2,574
Balance at Sep. 30, 2016			46
Balance at Dec. 31, 2016	36,172	$ 36,053	119
Cash distributions	(2,625)	(2,625)	0
Comprehensive income (loss), net of tax	2,836	2,838	(2)
Balance at Sep. 30, 2017	$ 36,383	$ 36,266	$ 117