Share-Based Associate Compensation Plans (Stock Option Information) (Details) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) $ / shares shares
Shares
Outstanding at beginning of year (in shares) | shares	3,437
Granted (in shares) | shares	508
Exercised (in shares) | shares	(274)
Forfeited or expired (in shares) | shares	(70)
Outstanding at end of year (in shares) | shares	3,601
Options exercisable at end of period (in shares) | shares	2,509
Weighted-average exercise price
Outstanding at beginning of year (in dollars per share) | $ / shares	$ 63.99
Granted (in dollars per share) | $ / shares	111.53
Exercised (in dollars per share) | $ / shares	41.86
Forfeited or expired (in dollars per share) | $ / shares	55.60
Outstanding at end of year (in dollars per share) | $ / shares	72.55
Options exercisable at end of period (in dollars per share) | $ / shares	$ 63.11
Aggregate intrinsic value
Outstanding at end of year | $	$ 66
Options exercisable at end of period | $	$ 61
Weighted-average remaining contractual life
Outstanding option shares at December 31, 2020	6 years 3 days
Options exercisable at end of period	4 years 11 months 19 days