Annual report pursuant to Section 13 and 15(d)

CASH AND INVESTMENTS - Age of Gross Unrealized Losses and Fair Value by Investment Category (Detail)

v3.6.0.2
CASH AND INVESTMENTS - Age of Gross Unrealized Losses and Fair Value by Investment Category (Detail)
$ in Millions
 12 Months Ended
Dec. 31, 2016
USD ($)
Gain (Loss) on Investments [Line Items]  
Less Than 12 Months Fair Value $ 274
Less Than 12 Months Unrealized Losses 3
12 Months or More Fair Value 0
12 Months or More Unrealized Losses 0
Total Fair Value 274
Total Unrealized Losses 3
U.S. government and agency debt securities  
Gain (Loss) on Investments [Line Items]  
Less Than 12 Months Fair Value 206
Less Than 12 Months Unrealized Losses 2
12 Months or More Fair Value 0
12 Months or More Unrealized Losses 0
Total Fair Value 206
Total Unrealized Losses 2
Mortgage and asset-backed debt securities  
Gain (Loss) on Investments [Line Items]  
Less Than 12 Months Fair Value 0
Less Than 12 Months Unrealized Losses 0
12 Months or More Fair Value 0
12 Months or More Unrealized Losses 0
Total Fair Value 0
Total Unrealized Losses 0
Corporate debt securities  
Gain (Loss) on Investments [Line Items]  
Less Than 12 Months Fair Value 68
Less Than 12 Months Unrealized Losses 1
12 Months or More Fair Value 0
12 Months or More Unrealized Losses 0
Total Fair Value 68
Total Unrealized Losses 1
Non-U.S. government debt securities  
Gain (Loss) on Investments [Line Items]  
Less Than 12 Months Fair Value 0
Less Than 12 Months Unrealized Losses 0
12 Months or More Fair Value 0
12 Months or More Unrealized Losses 0
Total Fair Value 0
Total Unrealized Losses 0
Equity securities  
Gain (Loss) on Investments [Line Items]  
Less Than 12 Months Fair Value 0
Less Than 12 Months Unrealized Losses 0
12 Months or More Fair Value 0
12 Months or More Unrealized Losses 0
Total Fair Value 0
Total Unrealized Losses $ 0