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Noncontrolling Interests (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Noncontrolling Interests:
Net income attributable to noncontrolling interest	$ 162	$ 186
Purchase of noncontrolling interest (shares)	324,100	657,268
Purchase price of noncontrolling interest	$ 122	$ 416
Purchase of noncontrolling interest, net of tax	(108)	(353)
Change in noncontrolling interest ownership, net of tax	$ (9)	$ (61)
A/N
Noncontrolling Interests:
Ownership percentage held by noncontrolling interest (percentage)	11.00%	11.00%
Common Noncontrolling Interest
Noncontrolling Interests:
Net income attributable to noncontrolling interest	$ 162	$ 186
Noncontrolling Interests
Noncontrolling Interests:
Purchase of noncontrolling interest, net of tax	(68)	(156)
Change in noncontrolling interest ownership, net of tax	(37)	(250)
Additional Paid-in Capital
Noncontrolling Interests:
Purchase of noncontrolling interest, net of tax	(40)	(197)
Impact of noncontrolling interest purchased	(40)	(197)
Change in noncontrolling interest ownership, net of tax	$ 28	$ 189
Maximum | Charter
Noncontrolling Interests:
Minority Interest Ownership Percentage Threshold	100.00%

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