Taxes on Income - Domestic and Foreign Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income before taxes domestic and foreign operations
Domestic operations	$ 2,068	$ 1,857	$ 1,723
Foreign operations	862	824	738
Income before taxes on income	2,930	2,681	2,461
Federal:
Current	303	198	489
Deferred	13	53	63
Total federal	316	251	552
Foreign:
Current	201	214	194
Deferred	14	(2)	(3)
Total foreign	215	212	191
State and local:
Current	93	84	73
Deferred	3	13	7
Total state and local	96	97	80
Total provision for taxes	$ 627	$ 560	$ 823
Reconciliation of federal statutory income tax rate
U.S. federal statutory income tax rate (as a percent)	21.00%	21.00%	35.00%
State and local income taxes (as a percent)	2.60%	2.80%	2.50%
Foreign operations (as a percent)	(0.30%)	0.20%	(3.90%)
Impact of TCJA (as a percent)	0.00%	(0.30%)	6.00%
Stock-based compensation (as a percent)	(1.40%)	(1.20%)	(2.70%)
S&P Dow Jones Indices LLC joint venture (as a percent)	(1.20%)	(1.20%)	(1.80%)
Tax credits and incentives (as a percent)	(1.70%)	(1.70%)	(2.10%)
Other, net (as a percent)	2.40%	1.30%	0.40%
Effective income tax rate (as a percent)	21.40%	20.90%	33.40%