Additional Information (Schedule of Valuation and Qualifying Accounts) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Discounts [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	$ 0	$ 0	$ 0
Charged to costs and expenses	597	607	647
Deductions	(597)	(607)	(647)
Balance at end of year	0	0	0
Returned Goods [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	41	50	40
Charged to costs and expenses	118	97	124
Deductions	(120)	(106)	(114)
Balance at end of year	$ 39	$ 41	$ 50