Share Owners' Equity (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Increase (Decrease) in Share Owners' Equity
Balance	$ 1,694	$ 1,295	$ 1,509	$ 1,055
Net distribution to parent	(55)	(7)	(101)	(13)
Net earnings	56	143	158	196
Other comprehensive income (loss)	(240)	14	(111)	207
Balance	1,455	1,445	1,455	1,445
Other Contributed Capital
Increase (Decrease) in Share Owners' Equity
Balance	507	629	553	635
Net distribution to parent	(55)	(7)	(101)	(13)
Balance	452	622	452	622
Retained Earnings
Increase (Decrease) in Share Owners' Equity
Balance	2,720	2,490	2,623	2,442
Net earnings	50	140	147	188
Balance	2,770	2,630	2,770	2,630
Accumulated Other Comprehensive Loss
Increase (Decrease) in Share Owners' Equity
Balance	(1,663)	(1,940)	(1,786)	(2,131)
Other comprehensive income (loss)	(225)	24	(102)	215
Balance	(1,888)	(1,916)	(1,888)	(1,916)
Non-controlling Interests
Increase (Decrease) in Share Owners' Equity
Balance	130	116	119	109
Net earnings	6	3	11	8
Other comprehensive income (loss)	(15)	(10)	(9)	(8)
Balance	$ 121	$ 109	$ 121	$ 109