The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Goodwill and Other Intangible Assets (Summary of Intangible Assets) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Goodwill and Other Intangible Assets
Accumulated Amortization	$ (945)		$ (945)		$ (887)
Intangible Assets Gross, Carrying Amount	2,003		2,003		1,980
Intangible Assets, Net Intangibles	1,058		1,058		1,093
Amortization	33	$ 33	65	$ 68
Customer and distributor relationships
Goodwill and Other Intangible Assets
Carrying Amount	941		941		941
Accumulated Amortization	(436)		(436)		(410)
Net Intangibles	505		505		531
Proprietary technology and patents
Goodwill and Other Intangible Assets
Carrying Amount	206		206		206
Accumulated Amortization	(138)		(138)		(131)
Net Intangibles	68		68		75
Trademarks
Goodwill and Other Intangible Assets
Carrying Amount	143		143		143
Accumulated Amortization	(68)		(68)		(63)
Net Intangibles	75		75		80
Software
Goodwill and Other Intangible Assets
Carrying Amount	523		523		500
Accumulated Amortization	(284)		(284)		(265)
Net Intangibles	239		239		235
Other
Goodwill and Other Intangible Assets
Carrying Amount	21		21		21
Accumulated Amortization	(19)		(19)		(18)
Net Intangibles	2		2		3
Indefinite-lived intangibles
Goodwill and Other Intangible Assets
Accumulated Amortization	0		0		0
Indefinite-lived intangibles	$ 169		$ 169		$ 169