Condensed Consolidated Statements of Stockholders Equity - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	AOCI Attributable to Parent [Member]
Stockholders' Equity Attributable to Parent	$ 8,450	$ 1	$ 1,899	$ 7,285	$ (1,371)	$ 636
Adoption of New Accounting Standard Current Expected Credit Losses	0			0
Net Income (Loss) Attributable to Parent	170
Other Comprehensive Income (Loss), Net of Tax	1,129					1,129
Dividends, Common Stock, Cash	(38)			(38)
Treasury Stock, Value, Acquired, Cost Method	(49)				49
Stock Issued During Period, Value, Treasury Stock Reissued	(8)		(8)	(5)	(5)
Stockholders' Equity Attributable to Parent	9,670	1	1,907	7,412	(1,415)	1,765
Stockholders' Equity Attributable to Parent	11,601	1	1,937	7,952	(1,426)	3,137
Adoption of New Accounting Standard Current Expected Credit Losses	(12)			(12)
Net Income (Loss) Attributable to Parent	(88)
Other Comprehensive Income (Loss), Net of Tax	(2,007)					(2,007)
Dividends, Common Stock, Cash	(44)			(44)
Treasury Stock, Value, Acquired, Cost Method	(156)				156
Stock Issued During Period, Value, Treasury Stock Reissued	(7)		(5)	(6)	(8)
Stockholders' Equity Attributable to Parent	$ 9,301	$ 1	$ 1,942	$ 7,802	$ (1,574)	$ 1,130