Share-Based Payments (Summary of Stock Option Activity) (Details) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding at beginning of period \| shares	5.4
Options granted \| shares	0.3
Options exercised \| shares	(0.9)
Options forfeited \| shares	(0.1)
Options expired \| shares	0.0
Options outstanding at end of period \| shares	4.7
Options exercisable at the end of the period \| shares	3.9
Options vested and expected to vest at the end of the period \| shares	4.7
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted-average exercise price, options outstanding at the beginning of the period \| $ / shares	$ 152
Weighted-average exercise price, options granted \| $ / shares	344
Weighted-average exercise price, options exercised \| $ / shares	100
Weighted-average exercise price, options forfeited \| $ / shares	308
Weighted-average exercise price, options expired \| $ / shares	363
Weighted-average exercise price, options outstanding at the end of the period \| $ / shares	173
Weighted-average exercise price, options exercisable at the end of the period \| $ / shares	143
Weighted-average exercise price, options vested and expected to vest at he end of the period \| $ / shares	$ 173
Weighted-average remaining contractual term, options outstanding at he end of the period, in years	4 years 10 months 24 days
Weighted-average remaining contractual term, options exercisable at he end of the period, in years	4 years 3 months 18 days
Weighted-average remaining contractual term, options vested and expected to vest at he end of the period, in years	4 years 10 months 24 days
Aggregate intrinsic value, options outstanding at he end of the period \| $	$ 828
Aggregate intrinsic value, options exercisable at he end of the period \| $	788
Aggregate intrinsic value, options vested and expected to vest at he end of the period \| $	$ 827

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.