Equity and Comprehensive Income (Loss) - Equity (Details) - USD ($) $ in Millions		1 Months Ended	12 Months Ended
	Nov. 23, 2021	Nov. 30, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Feb. 29, 2020
Class of Stock [Line Items]
Number of shares authorized to be repurchased (in shares)			100,000,000			100,000,000
Number of shares repurchased (in shares)			0	0	0
Common shares issued from Treasury stock (in shares)			2,100,000	2,100,000	2,300,000
Common shares issued from Treasury stock			$ 91	$ 91	$ 101
Noncontrolling Interests
Class of Stock [Line Items]
Acquisition of additional interests in certain controlled wireless partnerships			(583)	$ (573)	$ (557)
Controlled Wireless Partnerships
Class of Stock [Line Items]
Cash consideration			508
Controlled Wireless Partnerships | Additional Paid In Capital
Class of Stock [Line Items]
Acquisition of additional interests in certain controlled wireless partnerships			450
Controlled Wireless Partnerships | Noncontrolling Interests
Class of Stock [Line Items]
Acquisition of additional interests in certain controlled wireless partnerships			$ 58
TracFone Wireless, Inc.
Class of Stock [Line Items]
Number of shares issuable (in shares)	57,596,544	57,600,000
Common stock value consideration to acquire business	$ 2,981