Recently Issued Accounting Pronouncements - Schedule of Impact of Adoption on Consolidated Financial Statements (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018	Dec. 31, 2015
Net revenues
Net revenues	$ 2,381	$ 1,512	$ 1,641	$ 1,965	$ 2,043	$ 1,618	$ 1,631	$ 1,726	$ 7,500	$ 7,017	$ 6,608
Cost of revenues:
Cost of revenues	832	513	510	662	803	552	561	585
Product development									1,101	1,069	958
Sales and marketing									1,062	1,378	1,210
General and administrative									832	760	634
Total costs and expenses									5,512	5,708	5,196
Operating income	694	265	434	595	221	257	339	493	1,988	1,309	1,412
Interest and other expense (income), net (Note 17)									71	146	214
Loss on extinguishment of debt									40	12	92
Income before income tax expense									1,877	1,151	1,106
Income tax expense									64	878	140
Net income	$ 650	$ 260	$ 402	$ 500	$ (584)	$ 188	$ 243	$ 426	$ 1,813	$ 273	$ 966
Earnings per common share
Basic (in dollars per share)	$ 0.85	$ 0.34	$ 0.53	$ 0.66	$ (0.77)	$ 0.25	$ 0.32	$ 0.57	$ 2.38	$ 0.36	$ 1.30
Diluted (in dollars per share)	$ 0.84	$ 0.34	$ 0.52	$ 0.65	$ (0.77)	$ 0.25	$ 0.32	$ 0.56	$ 2.35	$ 0.36	$ 1.28
Assets
Accounts receivable, net	$ 1,035				$ 918				$ 1,035	$ 918		$ 921
Software development	264				367				264	367		347
Other current assets	539				476				539	476		441
Deferred income taxes, net	403				459				403	459		427
Other assets	482				440				482	440		444
Liabilities and Shareholders’ Equity
Deferred revenues	1,493				1,929				1,493	1,929		1,735
Accrued expenses and other liabilities	896				1,411				896	1,411
Other liabilities	1,147				1,132				1,147	1,132		1,155
Shareholders’ equity	11,357				9,462				11,357	9,462	$ 9,119	9,553	$ 8,068
Product sales
Net revenues
Net revenues									2,255	2,110	2,196
Product costs
Cost of revenues:
Cost of revenues									719	733	741
Software royalties, amortization, and intellectual property licenses
Cost of revenues:
Cost of revenues									371	300	331
Subscription, licensing, and other revenues
Net revenues
Net revenues									5,245	4,907	4,412
Game operations and distribution costs
Cost of revenues:
Cost of revenues									1,028	984	851
Software royalties, amortization, and intellectual property licenses
Cost of revenues:
Cost of revenues									399	484	$ 471
Calculated under Revenue Guidance in Effect before Topic 606
Net revenues
Net revenues									7,564
Cost of revenues:
Product development									1,101
Sales and marketing									1,063
General and administrative									832
Total costs and expenses									5,553
Operating income									2,011
Interest and other expense (income), net (Note 17)									71
Loss on extinguishment of debt									40
Income before income tax expense									1,900
Income tax expense									65
Net income									$ 1,835
Earnings per common share
Basic (in dollars per share)									$ 2.41
Diluted (in dollars per share)									$ 2.38
Assets
Accounts receivable, net	1,037				918				$ 1,037	918
Software development	266				367				266	367
Other current assets	559				476				559	476
Deferred income taxes, net	453				459				453	459
Other assets	493				440				493	440
Liabilities and Shareholders’ Equity
Deferred revenues	1,674				1,929				1,674	1,929
Accrued expenses and other liabilities	914								914
Other liabilities	1,102				1,132				1,102	1,132
Shareholders’ equity	11,288				$ 9,462				11,288	$ 9,462
Calculated under Revenue Guidance in Effect before Topic 606 | Product sales
Net revenues
Net revenues									2,398
Calculated under Revenue Guidance in Effect before Topic 606 | Product costs
Cost of revenues:
Cost of revenues									737
Calculated under Revenue Guidance in Effect before Topic 606 | Software royalties, amortization, and intellectual property licenses
Cost of revenues:
Cost of revenues									389
Calculated under Revenue Guidance in Effect before Topic 606 | Subscription, licensing, and other revenues
Net revenues
Net revenues									5,166
Calculated under Revenue Guidance in Effect before Topic 606 | Game operations and distribution costs
Cost of revenues:
Cost of revenues									1,028
Calculated under Revenue Guidance in Effect before Topic 606 | Software royalties, amortization, and intellectual property licenses
Cost of revenues:
Cost of revenues									403
Difference between Revenue Guidance in Effect before and after Topic 606 | Adjustments For ASU 2014-09
Net revenues
Net revenues									(64)
Cost of revenues:
Product development									0
Sales and marketing									(1)
General and administrative									0
Total costs and expenses									(41)
Operating income									(23)
Interest and other expense (income), net (Note 17)									0
Loss on extinguishment of debt									0
Income before income tax expense									(23)
Income tax expense									(1)
Net income									$ (22)
Earnings per common share
Basic (in dollars per share)									$ (0.03)
Diluted (in dollars per share)									$ (0.03)
Assets
Accounts receivable, net	(2)								$ (2)			3
Software development	(2)								(2)			(20)
Other current assets	(20)								(20)			(35)
Deferred income taxes, net	(50)								(50)			(32)
Other assets	(11)								(11)			4
Liabilities and Shareholders’ Equity
Deferred revenues	(181)								(181)			(194)
Accrued expenses and other liabilities	(18)								(18)
Other liabilities	45								45			23
Shareholders’ equity	$ 69								69			$ 91
Difference between Revenue Guidance in Effect before and after Topic 606 | Adjustments For ASU 2014-09 | Product sales
Net revenues
Net revenues									(143)
Difference between Revenue Guidance in Effect before and after Topic 606 | Adjustments For ASU 2014-09 | Product costs
Cost of revenues:
Cost of revenues									(18)
Difference between Revenue Guidance in Effect before and after Topic 606 | Adjustments For ASU 2014-09 | Software royalties, amortization, and intellectual property licenses
Cost of revenues:
Cost of revenues									(18)
Difference between Revenue Guidance in Effect before and after Topic 606 | Adjustments For ASU 2014-09 | Subscription, licensing, and other revenues
Net revenues
Net revenues									79
Difference between Revenue Guidance in Effect before and after Topic 606 | Adjustments For ASU 2014-09 | Game operations and distribution costs
Cost of revenues:
Cost of revenues									0
Difference between Revenue Guidance in Effect before and after Topic 606 | Adjustments For ASU 2014-09 | Software royalties, amortization, and intellectual property licenses
Cost of revenues:
Cost of revenues									$ (4)