Income Taxes - Schedule of Components of Deferred Tax Liabilities and Assets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Other amortizable assets	$ 394	$ 49
Tax credit carryforwards	387	274
Lease obligations	254
Deferred compensation	120	134
Restructuring charges and other reserves	104	156
NOL and other carryforwards	73	104
Pension plan	66	55
Foreign currency translation	57	50
Unrealized losses on investment securities, net	0	146
Total deferred tax assets	1,455	968
Valuation allowance for deferred tax assets	(330)	(138)
Deferred tax assets, net of valuation allowance	1,125	830
Deferred tax liabilities:
Fixed and intangible assets	763	744
Investment basis differences	258	229
Right-of-use Assets	223
Unrealized gains on investment securities, net	86	0
Other	32	11
Total deferred tax liabilities	$ 1,362	$ 984