Stock-Based Compensation Programs (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) installment $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares
Stock option and SSARs
Stock-Based Compensation Programs
Number of equal installments commencing one year from the date of grant | installment	4
Vesting period	1 year
Expiration period of options	10 years
Outstanding Options, Number of Shares
Beginning of year (in shares) | shares	10,113,396
Granted (in shares) | shares	1,193,934
Exercised (in shares) | shares	(1,441,190)
Canceled/forfeited (in shares) | shares	(100,044)
End of the period (in shares) | shares	9,766,096	10,113,396
Vested and exercisable, end of period (in shares) | shares	6,500,576
Reserved for future grants (in shares) | shares	14,793,877
Outstanding Options, Weighted Average Exercise Price
Beginning of year (in dollars per share) | $ / shares	$ 40.40
Granted (in dollars per share) | $ / shares	85.52
Exercised (in dollars per share) | $ / shares	33.07
Canceled/forfeited (in dollars per share) | $ / shares	73.65
End of period (in dollars per share) | $ / shares	46.66	$ 40.40
Vested and exercisable, end of period (in dollars per share) | $ / shares	$ 36.04
Additional disclosures
Weighted average remaining contractual term of options outstanding	5 years 6 months
Aggregate intrinsic value of options outstanding | $	$ 485.0
Weighted average remaining contractual term of options vested and exercisable	4 years 3 months 18 days
Aggregate intrinsic value of options vested and exercisable | $	$ 392.0
Total fair value of options vested | $	$ 18.0	$ 17.0	$ 16.0
Weighted average fair value at grant date (in dollars per share) | $ / shares	$ 19.86	$ 15.36	$ 12.26
Stock options
Additional disclosures
Cash received from options exercised | $	$ 33.0	$ 38.0	$ 41.0
Intrinsic value of options exercised | $	84.0	$ 230.0	$ 61.0
Tax benefit from exercise of options | $	$ 19.0
Restricted shares and restricted stock units
Stock-Based Compensation Programs
Vesting period	5 years