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Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2013
Fair Value Disclosures [Abstract]  
Assets measured at fair value on a recurring basis [Table Text Block]
The following tables provide a summary of assets and liabilities measured at fair value on a recurring basis and as reported in the Condensed Consolidated Balance Sheets (in millions):
 
Fair Value Measurements at March 31, 2013 Using:
 
 
 
Quoted Prices in
Active Markets For
Identical Assets
 
Significant Other
Observable
Remaining Inputs
 
Significant Other
Unobservable
Remaining Inputs
 
 
 
(Level 1)
 
(Level 2)
 
(Level 3)
 
Total
Assets measured at fair value:
 
 
 
 
 
 
 
Available-for-sale securities:
 
 
 
 
 
 
 
Asset-backed securities
$

 
$
234.8

 
$

 
$
234.8

Certificate of deposit

 
45.0

 

 
45.0

Corporate debt securities

 
615.7

 

 
615.7

Foreign government debt securities

 
15.8

 

 
15.8

Government-sponsored enterprise obligations
265.6

 
5.0

 

 
270.6

Money market funds (1)
839.1

 

 

 
839.1

Mutual funds (2)
3.0

 

 

 
3.0

Publicly-traded equity securities
2.6

 

 

 
2.6

U.S. government securities
237.2

 
199.1

 

 
436.3

Total available-for-sale securities
1,347.5

 
1,115.4

 

 
2,462.9

Trading securities in mutual funds (3)
13.8

 

 

 
13.8

Derivative assets:
 
 
 
 
 
 
 
Foreign exchange contracts

 
1.6

 

 
1.6

Total assets measured at fair value
$
1,361.3

 
$
1,117.0

 
$

 
$
2,478.3

Liabilities measured at fair value:
 
 
 
 
 
 
 
Derivative liabilities:
 
 
 
 
 
 
 
Foreign exchange contracts
$

 
$
1.1

 
$

 
$
1.1

Total liabilities measured at fair value
$

 
$
1.1

 
$

 
$
1.1

 
 
 
 
 
 
 
 
Total assets measured at fair value, reported as:
 
 
 
 
 
 
 
Cash equivalents
$
749.6

 
$
6.3

 
$

 
$
755.9

Restricted investments
92.5

 

 

 
92.5

Short-term investments
262.5

 
350.6

 

 
613.1

Long-term investments
256.7

 
758.5

 

 
1,015.2

Prepaid expenses and other current assets

 
1.6

 

 
1.6

Total assets measured at fair value
$
1,361.3

 
$
1,117.0

 
$

 
$
2,478.3

 
 
 
 
 
 
 
 
Total liabilities measured at fair value, reported as:
 
 
 
 
 
 
 
Other accrued liabilities
$

 
$
1.1

 
$

 
$
1.1

Total liabilities measured at fair value
$

 
$
1.1

 
$

 
$
1.1

________________________________
(1) 
Balance includes $89.5 million of restricted investments measured at fair market value, related to the Company's D&O trust and acquisition-related escrows.
(2) 
Balance relates to the restricted investments measured at fair market value of the Company's India Gratuity Trust.
(3) 
Balance relates to investments measured at fair value related to the Company's non-qualified deferred compensation plan assets.
 
Fair Value Measurements at December 31, 2012 Using:
 
 
 
Quoted Prices in
Active Markets For
Identical Assets
 
Significant Other
Observable
Remaining Inputs
 
Significant Other
Unobservable
Remaining Inputs
 
 
 
(Level 1)
 
(Level 2)
 
(Level 3)
 
Total
Assets measured at fair value:
 
 
 
 
 
 
 
Available-for-sale securities:
 
 
 
 
 
 
 
Asset-backed securities
$

 
$
226.4

 
$

 
$
226.4

Certificate of deposit

 
42.5

 

 
42.5

Commercial paper

 
22.4

 

 
22.4

Corporate debt securities

 
535.6

 

 
535.6

Foreign government debt securities

 
5.0

 

 
5.0

Government-sponsored enterprise obligations
254.9

 
16.1

 

 
271.0

Money market funds (1)
1,145.2

 

 

 
1,145.2

Mutual funds (2)
1.0

 
2.0

 

 
3.0

Publicly-traded equity securities
2.9

 

 

 
2.9

U.S. government securities
275.9

 
218.6

 

 
494.5

Total available-for-sale securities
1,679.9

 
1,068.6

 

 
2,748.5

Trading securities in mutual funds (3)
12.6

 

 

 
12.6

Derivative assets:
 
 
 
 
 
 
 
Foreign exchange contracts

 
3.5

 

 
3.5

Total assets measured at fair value
$
1,692.5

 
$
1,072.1

 
$

 
$
2,764.6

Liabilities measured at fair value:
 
 
 
 
 
 
 
Derivative liabilities:
 
 
 
 
 
 
 
Foreign exchange contracts
$

 
$
0.1

 
$

 
$
0.1

Total liabilities measured at fair value
$

 
$
0.1

 
$

 
$
0.1

 
 
 
 
 
 
 
 
Total assets measured at fair value, reported as:
 
 
 
 
 
 
 
Cash equivalents
$
1,048.7

 
$
177.2

 
$

 
$
1,225.9

Restricted investments
103.6

 
2.0

 

 
105.6

Short-term investments
224.4

 
217.1

 

 
441.5

Long-term investments
315.8

 
672.3

 

 
988.1

Prepaid expenses and other current assets

 
3.5

 

 
3.5

Total assets measured at fair value
$
1,692.5

 
$
1,072.1

 
$

 
$
2,764.6

 
 
 
 
 
 
 
 
Total liabilities measured at fair value, reported as:
 
 
 
 
 
 
 
Other accrued liabilities
$

 
$
0.1

 
$

 
$
0.1

Total liabilities measured at fair value
$

 
$
0.1

 
$

 
$
0.1


________________________________
(1) 
Balance includes $102.6 million of restricted investments measured at fair market value, related to the Company's D&O trust and acquisition-related escrows.
(2) 
Balance relates to the restricted investments measured at fair market value of the Company's India Gratuity Trust.
(3) 
Balance relates to investments measured at fair value related to the Company's non-qualified deferred compensation plan assets.