1,978

Estimated Fair Market Value, Total

1,975

Restricted cash

3,371

3,364

Cash, Cash Equivalents, and Short-Term Investments, Amortized Cost

3,374

3,380

U.S. government treasury securities

1,765

1,731

1,762

1,716

Corporate bonds

203

162

203

161

Commercial paper

U.S. government agency securities

Debt securities, available-for-sale, accumulated gross unrealized gain, before Tax

Debt securities, available-for-sale, accumulated gross unrealized loss, before tax

Cash

Cash and Cash Equivalents, at Carrying Value [Abstract]

Cash and cash equivalents

128

Money market funds

Cash and Cash Equivalents, at Carrying Value [Abstract]

Cash and cash equivalents

$ 1,309

$ 1,338

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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