Goodwill and Other Intangible Assets (Summary of Other Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Goodwill and Other Intangible Assets
Accumulated Amortization	$ (991)	$ (887)
Indefinite-lived intangibles	167	169
Intangible Assets Gross, Carrying Amount	2,007	1,980
Intangible Assets, Net Intangibles	1,016	1,093
Customer and Distributor Relationships
Goodwill and Other Intangible Assets
Carrying Amount	929	941
Accumulated Amortization	(456)	(410)
Net Intangibles	$ 473	531
Finite-Lived Intangible Asset, Useful Life	15 years
Proprietary Technology
Goodwill and Other Intangible Assets
Carrying Amount	$ 201	206
Accumulated Amortization	(142)	(131)
Net Intangibles	$ 59	75
Finite-Lived Intangible Asset, Useful Life	15 years
Trademarks
Goodwill and Other Intangible Assets
Carrying Amount	$ 141	143
Accumulated Amortization	(72)	(63)
Net Intangibles	$ 69	80
Finite-Lived Intangible Asset, Useful Life	13 years
Internally Developed Network Software
Goodwill and Other Intangible Assets
Carrying Amount	$ 548	500
Accumulated Amortization	(303)	(265)
Net Intangibles	$ 245	235
Finite-Lived Intangible Asset, Useful Life	4 years
Other
Goodwill and Other Intangible Assets
Carrying Amount	$ 21	21
Accumulated Amortization	(18)	(18)
Net Intangibles	$ 3	$ 3
Finite-Lived Intangible Asset, Useful Life	5 years