XML 39 R27.htm IDEA: XBRL DOCUMENT v3.19.1

Investments (Tables)

3 Months Ended

Mar. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Investments

The following table segregates those available-for-sale investments that have been in a continuous loss position for less than 12 months, and those that have been in a continuous loss position for 12 months or more as of March 31, 2019:

	In a Continuous Loss Position for Less than 12 Months											In a Continuous Loss Position for 12 Months or More
	Estimated Fair Value				Unrealized Losses				Total Number of Positions			Estimated Fair Value				Unrealized Losses				Total Number of Positions
	(Dollars in millions)
Corporate debt securities	$	207			$	1			96			$	403			$	2			280
GSEs	—				—				—			122				1				71
Municipal securities	—				—				—			87				1				91
	$	207			$	1			96			$	612			$	4			442

The following table segregates those available-for-sale investments that have been in a continuous loss position for less than 12 months, and those that have been in a continuous loss position for 12 months or more as of December 31, 2018:

	In a Continuous Loss Position for Less than 12 Months											In a Continuous Loss Position for 12 Months or More
	Estimated Fair Value				Unrealized Losses				Total Number of Positions			Estimated Fair Value				Unrealized Losses				Total Number of Positions
	(Dollars in millions)
Corporate debt securities	$	509			$	3			285			$	412			$	5			298
GSEs	—				—				—			127				1				76
Municipal securities	—				—				—			87				1				90
Asset-backed securities	—				—				—			68				1				52
	$	509			$	3			285			$	694			$	8			516

The following tables summarize our investments as of the dates indicated:

	March 31, 2019
	Amortized				Gross Unrealized								Estimated Fair
	Cost				Gains				Losses				Value
	(In millions)
Corporate debt securities	$	949			$	1			$	3			$	947
U.S. Treasury notes	168				—				—				168
GSEs	167				—				1				166
Municipal securities	113				—				1				112
Asset-backed securities	75				—				—				75
Mortgage-backed securities	23				—				—				23
Certificates of deposit	14				—				—				14
Other	3				—				—				3
	$	1,512			$	1			$	5			$	1,508

	December 31, 2018
	Amortized				Gross Unrealized								Estimated Fair
	Cost				Gains				Losses				Value
	(In millions)
Corporate debt securities	$	1,131			$	—			$	8			$	1,123
U.S. Treasury notes	181				—				—				181
GSEs	164				—				1				163
Municipal securities	115				—				1				114
Asset-backed securities	83				—				1				82
Certificates of deposit	14				—				—				14
Other	4				—				—				4
Total current investments	$	1,692			$	—			$	11			$	1,681

Contractual maturities of investments

The contractual maturities of our available-for-sale investments as of March 31, 2019 are summarized below:

	Amortized Cost				Estimated Fair Value
	(In millions)
Due in one year or less	$	927			$	926
Due after one year through five years	550				547
Due after five years through ten years	12				12
Due after ten years	23				23
	$	1,512			$	1,508

X

- Definition

Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-URI http://asc.fasb.org/topic&trid=2196928

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments.

+ References

No definition available.

+ Details

Name:	us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration